diff --git a/README.md b/README.md
index 9f071030a..b9c37bab6 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # MPS Extensions
 
 <a href="https://build.mbeddr.com/project.html?projectId=Mbeddr2_Mbeddr_Gradle_MpsExtensions&tab=projectOverview"><img src="https://build.mbeddr.com/app/rest/builds/buildType:(id:Mbeddr2_Mbeddr_Gradle_MpsExtenstions)/statusIcon"/></a>
-![≤ JetBrains MPS 2021.3.3](https://img.shields.io/badge/JetBrains%20MPS-%E2%89%A42021.3.3-orange)
+![≤ JetBrains MPS 2021.3.5](https://img.shields.io/badge/JetBrains%20MPS-%E2%89%A42021.3.5-orange)
 
 The MPS extensions aim to ease language development within MPS. They are maintained by itemis, JetBrains, and the open source community, and its development is closely aligned with the development of MPS.
 
diff --git a/build.gradle b/build.gradle
index 31484f9bf..335e563bf 100644
--- a/build.gradle
+++ b/build.gradle
@@ -70,7 +70,7 @@ ext.dependencyRepositories = [
 // major version, e.g. '2021.1', '2021.2'
 ext.mpsMajor = '2021.3'
 // optional minor/bugfix number (not added to the final build version)
-ext.mpsMinor = '3'
+ext.mpsMinor = '5'
 // e.g. Beta, EAP, RC
 ext.mpsReleaseType = ''
 
diff --git a/code/build/solutions/de.itemis.mps.extensions.build/models/de.itemis.mps.extensions.build.mps b/code/build/solutions/de.itemis.mps.extensions.build/models/de.itemis.mps.extensions.build.mps
index 51d08dd3e..2da9f5332 100644
--- a/code/build/solutions/de.itemis.mps.extensions.build/models/de.itemis.mps.extensions.build.mps
+++ b/code/build/solutions/de.itemis.mps.extensions.build/models/de.itemis.mps.extensions.build.mps
@@ -12126,9 +12126,6 @@
       <node concept="m$_yC" id="3ofF9dt4eDr" role="m$_yJ">
         <ref role="m$_y1" node="2OJNL7ElZsF" resolve="de.q60.mps.collections.libs" />
       </node>
-      <node concept="m$_yC" id="5lBBNpx5PcJ" role="m$_yJ">
-        <ref role="m$_y1" node="4p3FRivDLPy" resolve="org.apache.commons" />
-      </node>
       <node concept="2iUeEo" id="3vhhDKcvNeO" role="2iVFfd">
         <property role="2iUeEt" value="Modelix" />
         <property role="2iUeEu" value="http://modelix.org" />
@@ -12138,6 +12135,9 @@
           <property role="3MwjfP" value="Alternative model API with better support for persistent data structures." />
         </node>
       </node>
+      <node concept="m$_yC" id="5lBBNpx5PcJ" role="m$_yJ">
+        <ref role="m$_y1" node="4p3FRivDLPy" resolve="org.apache.commons" />
+      </node>
     </node>
     <node concept="2G$12M" id="5U8hsWC6WQb" role="3989C9">
       <property role="TrG5h" value="group.model-api" />
@@ -14735,6 +14735,11 @@
             <ref role="3bR37D" node="F1NWDqweoc" resolve="com.mbeddr.mpsutil.grammarcells.sandboxlang" />
           </node>
         </node>
+        <node concept="1SiIV0" id="2ii6N8k6GSa" role="3bR37C">
+          <node concept="3bR9La" id="2ii6N8k6GSb" role="1SiIV1">
+            <ref role="3bR37D" to="ffeo:1H905DlDUSw" resolve="MPS.OpenAPI" />
+          </node>
+        </node>
       </node>
       <node concept="1E1JtA" id="6$6tsX_CURF" role="2G$12L">
         <property role="BnDLt" value="true" />
@@ -16068,6 +16073,26 @@
             <ref role="3bR37D" node="2UnEDPCh8Ac" resolve="de.itemis.model.simple.demo.property" />
           </node>
         </node>
+        <node concept="1SiIV0" id="2ii6N8k6GXx" role="3bR37C">
+          <node concept="3bR9La" id="2ii6N8k6GXy" role="1SiIV1">
+            <ref role="3bR37D" to="ffeo:7Kfy9QB6KXW" resolve="jetbrains.mps.lang.core" />
+          </node>
+        </node>
+        <node concept="1SiIV0" id="2ii6N8k6GXz" role="3bR37C">
+          <node concept="3bR9La" id="2ii6N8k6GX$" role="1SiIV1">
+            <ref role="3bR37D" node="GuygFg7AfB" resolve="test.de.itemis.mps.modelmerger.testlanguage" />
+          </node>
+        </node>
+        <node concept="1SiIV0" id="2ii6N8k6GX_" role="3bR37C">
+          <node concept="3bR9La" id="2ii6N8k6GXA" role="1SiIV1">
+            <ref role="3bR37D" to="ffeo:1TaHNgiIbIQ" resolve="MPS.Core" />
+          </node>
+        </node>
+        <node concept="1SiIV0" id="2ii6N8k6GXB" role="3bR37C">
+          <node concept="3bR9La" id="2ii6N8k6GXC" role="1SiIV1">
+            <ref role="3bR37D" node="5Jy3PcPRnpY" resolve="de.itemis.model.merge.baselang.sandbox" />
+          </node>
+        </node>
       </node>
       <node concept="1E1JtA" id="2UnEDPCpnjG" role="2G$12L">
         <property role="BnDLt" value="true" />
@@ -16437,6 +16462,11 @@
             <ref role="3bR37D" to="ffeo:7Kfy9QB6KXW" resolve="jetbrains.mps.lang.core" />
           </node>
         </node>
+        <node concept="1SiIV0" id="2ii6N8k6GYE" role="3bR37C">
+          <node concept="3bR9La" id="2ii6N8k6GYF" role="1SiIV1">
+            <ref role="3bR37D" to="ffeo:mXGwHwhVPj" resolve="JDK" />
+          </node>
+        </node>
       </node>
       <node concept="1E1JtA" id="3oyo9Wzq1vN" role="2G$12L">
         <property role="BnDLt" value="true" />
@@ -17022,31 +17052,11 @@
             <ref role="3bR37D" to="ffeo:mXGwHwhVPj" resolve="JDK" />
           </node>
         </node>
-        <node concept="1SiIV0" id="7g5FWGK3ZSY" role="3bR37C">
-          <node concept="3bR9La" id="7g5FWGK3ZSZ" role="1SiIV1">
-            <ref role="3bR37D" node="5U8hsWC73Be" resolve="org.modelix.model.repositoryconcepts" />
-          </node>
-        </node>
-        <node concept="1SiIV0" id="7g5FWGK3ZT0" role="3bR37C">
-          <node concept="3bR9La" id="7g5FWGK3ZT1" role="1SiIV1">
-            <ref role="3bR37D" to="ffeo:7Kfy9QB6KXW" resolve="jetbrains.mps.lang.core" />
-          </node>
-        </node>
         <node concept="1SiIV0" id="7g5FWGK3ZT2" role="3bR37C">
           <node concept="3bR9La" id="7g5FWGK3ZT3" role="1SiIV1">
             <ref role="3bR37D" node="5U8hsWC70jw" resolve="org.modelix.model.api" />
           </node>
         </node>
-        <node concept="1SiIV0" id="7g5FWGK3ZT4" role="3bR37C">
-          <node concept="3bR9La" id="7g5FWGK3ZT5" role="1SiIV1">
-            <ref role="3bR37D" node="4iIKqJTZ5Hm" resolve="de.q60.mps.shadowmodels.runtime" />
-          </node>
-        </node>
-        <node concept="1SiIV0" id="7g5FWGK3ZT6" role="3bR37C">
-          <node concept="3bR9La" id="7g5FWGK3ZT7" role="1SiIV1">
-            <ref role="3bR37D" to="ffeo:7Kfy9QB6KYb" resolve="jetbrains.mps.baseLanguage" />
-          </node>
-        </node>
         <node concept="1SiIV0" id="7g5FWGK3ZT8" role="3bR37C">
           <node concept="3bR9La" id="7g5FWGK3ZT9" role="1SiIV1">
             <ref role="3bR37D" to="ffeo:1TaHNgiIbIQ" resolve="MPS.Core" />
diff --git a/code/diagram/languages/de.itemis.mps.editor.diagram.demoentities/languageModels/editor.mps b/code/diagram/languages/de.itemis.mps.editor.diagram.demoentities/languageModels/editor.mps
index 864b93b63..482c571e4 100644
--- a/code/diagram/languages/de.itemis.mps.editor.diagram.demoentities/languageModels/editor.mps
+++ b/code/diagram/languages/de.itemis.mps.editor.diagram.demoentities/languageModels/editor.mps
@@ -1388,10 +1388,7 @@
                             <node concept="Xl_RD" id="6rPpQ1NH_wj" role="3uHU7B">
                               <property role="Xl_RC" value="returning Extends.to: " />
                             </node>
-                            <node concept="2OqwBi" id="7LJ_vJOlkvY" role="3uHU7w">
-                              <node concept="1Pxb5l" id="6rPpQ1NH_wu" role="2Oq$k0" />
-                              <node concept="2Iv5rx" id="7LJ_vJOlkvZ" role="2OqNvi" />
-                            </node>
+                            <node concept="1Pxb5l" id="6rPpQ1NH_wu" role="3uHU7w" />
                           </node>
                         </node>
                       </node>
diff --git a/code/diagram/solutions/de.itemis.mps.editor.diagram.demoentities.sandbox/models/de/itemis/mps/editor/diagram/demoentities/sandbox.mps b/code/diagram/solutions/de.itemis.mps.editor.diagram.demoentities.sandbox/models/de/itemis/mps/editor/diagram/demoentities/sandbox.mps
index 543ee1ebd..c9de7c464 100644
--- a/code/diagram/solutions/de.itemis.mps.editor.diagram.demoentities.sandbox/models/de/itemis/mps/editor/diagram/demoentities/sandbox.mps
+++ b/code/diagram/solutions/de.itemis.mps.editor.diagram.demoentities.sandbox/models/de/itemis/mps/editor/diagram/demoentities/sandbox.mps
@@ -139,8 +139,8 @@
           <node concept="gqqVs" id="56Tfdun38iY" role="37mO4d">
             <property role="gqqTZ" value="237.0" />
             <property role="gqqTW" value="334.0004967285156" />
-            <property role="gqqTX" value="116.0" />
-            <property role="gqqTy" value="46.0" />
+            <property role="gqqTX" value="155.0" />
+            <property role="gqqTy" value="64.0" />
             <property role="TgtnS" value="1.0;0.0;0.0;1.0;0.0;0.0" />
           </node>
         </node>
@@ -149,8 +149,8 @@
           <node concept="gqqVs" id="56Tfdun38iA" role="37mO4d">
             <property role="gqqTZ" value="245.0" />
             <property role="gqqTW" value="455.0007103515625" />
-            <property role="gqqTX" value="100.0" />
-            <property role="gqqTy" value="46.0" />
+            <property role="gqqTX" value="133.0" />
+            <property role="gqqTy" value="64.0" />
             <property role="TgtnS" value="1.0;0.0;0.0;1.0;0.0;0.0" />
           </node>
         </node>
@@ -159,8 +159,8 @@
           <node concept="gqqVs" id="56Tfdun38hW" role="37mO4d">
             <property role="gqqTZ" value="130.0" />
             <property role="gqqTW" value="193.00029836425782" />
-            <property role="gqqTX" value="92.0" />
-            <property role="gqqTy" value="46.0" />
+            <property role="gqqTX" value="122.0" />
+            <property role="gqqTy" value="64.0" />
             <property role="TgtnS" value="1.0;0.0;0.0;1.0;0.0;0.0" />
           </node>
         </node>
@@ -169,8 +169,8 @@
           <node concept="gqqVs" id="56Tfdun38iw" role="37mO4d">
             <property role="gqqTZ" value="146.0" />
             <property role="gqqTW" value="52.0001" />
-            <property role="gqqTX" value="60.0" />
-            <property role="gqqTy" value="46.0" />
+            <property role="gqqTX" value="78.0" />
+            <property role="gqqTy" value="64.0" />
             <property role="TgtnS" value="1.0;0.0;0.0;1.0;0.0;0.0" />
           </node>
         </node>
diff --git a/code/diagram/solutions/de.itemis.mps.editor.diagram.runtime/models/de/itemis/mps/editor/diagram/runtime/jgraph.mps b/code/diagram/solutions/de.itemis.mps.editor.diagram.runtime/models/de/itemis/mps/editor/diagram/runtime/jgraph.mps
index a96bb503f..5f61fa91c 100755
--- a/code/diagram/solutions/de.itemis.mps.editor.diagram.runtime/models/de/itemis/mps/editor/diagram/runtime/jgraph.mps
+++ b/code/diagram/solutions/de.itemis.mps.editor.diagram.runtime/models/de/itemis/mps/editor/diagram/runtime/jgraph.mps
@@ -59147,6 +59147,24 @@
         </node>
       </node>
     </node>
+    <node concept="2tJIrI" id="itssr789xH" role="jymVt" />
+    <node concept="3clFb_" id="itssr78hM5" role="jymVt">
+      <property role="TrG5h" value="getMPSCell" />
+      <node concept="3clFbS" id="itssr78hM8" role="3clF47">
+        <node concept="3cpWs6" id="itssr78jZ_" role="3cqZAp">
+          <node concept="2OqwBi" id="itssr78l_4" role="3cqZAk">
+            <node concept="Xjq3P" id="itssr78kdS" role="2Oq$k0" />
+            <node concept="2OwXpG" id="itssr78nJe" role="2OqNvi">
+              <ref role="2Oxat6" node="1uCOQFMkh1i" resolve="myEditingCell" />
+            </node>
+          </node>
+        </node>
+      </node>
+      <node concept="3Tm1VV" id="itssr78dG3" role="1B3o_S" />
+      <node concept="3uibUv" id="itssr78haf" role="3clF45">
+        <ref role="3uigEE" node="3YJYJT3M3W" resolve="MPSCell" />
+      </node>
+    </node>
   </node>
   <node concept="312cEu" id="1uCOQFNaAxI">
     <property role="TrG5h" value="MPSCellEditor" />
@@ -107043,6 +107061,9 @@
                   <ref role="3cqZAo" node="2BjZSlQD2RX" resolve="ports" />
                 </node>
                 <node concept="2DpFxk" id="6KIoYkeusZH" role="2OqNvi">
+                  <node concept="1nlBCl" id="6KIoYkeusZP" role="2Dq5b$">
+                    <property role="3clFbU" value="true" />
+                  </node>
                   <node concept="1bVj0M" id="6L_GEhdDfhS" role="23t8la">
                     <node concept="3clFbS" id="6L_GEhdDfhT" role="1bW5cS">
                       <node concept="3clFbF" id="6L_GEhdDi6L" role="3cqZAp">
@@ -107070,9 +107091,6 @@
                       <node concept="2jxLKc" id="6L_GEhdDfhX" role="1tU5fm" />
                     </node>
                   </node>
-                  <node concept="1nlBCl" id="6KIoYkeusZP" role="2Dq5b$">
-                    <property role="3clFbU" value="true" />
-                  </node>
                 </node>
               </node>
               <node concept="ANE8D" id="6Fu8whC8Cv6" role="2OqNvi" />
diff --git a/code/diagram/solutions/de.itemis.mps.editor.diagram.runtime/models/de/itemis/mps/editor/diagram/runtime/plugin.mps b/code/diagram/solutions/de.itemis.mps.editor.diagram.runtime/models/de/itemis/mps/editor/diagram/runtime/plugin.mps
index 634beca59..fa0a80048 100755
--- a/code/diagram/solutions/de.itemis.mps.editor.diagram.runtime/models/de/itemis/mps/editor/diagram/runtime/plugin.mps
+++ b/code/diagram/solutions/de.itemis.mps.editor.diagram.runtime/models/de/itemis/mps/editor/diagram/runtime/plugin.mps
@@ -29,6 +29,7 @@
     <import index="wyt6" ref="6354ebe7-c22a-4a0f-ac54-50b52ab9b065/java:java.lang(JDK/)" />
     <import index="1njx" ref="1144260c-e9a5-49a2-9add-39a1a1a7077e/java:com.mxgraph.view(de.itemis.mps.editor.diagram.runtime/)" />
     <import index="99ht" ref="1144260c-e9a5-49a2-9add-39a1a1a7077e/java:com.mxgraph.model(de.itemis.mps.editor.diagram.runtime/)" />
+    <import index="f4zo" ref="1ed103c3-3aa6-49b7-9c21-6765ee11f224/java:jetbrains.mps.openapi.editor.cells(MPS.Editor/)" />
     <import index="71xd" ref="742f6602-5a2f-4313-aa6e-ae1cd4ffdc61/java:jetbrains.mps.ide.tools(MPS.Platform/)" implicit="true" />
     <import index="tprs" ref="r:00000000-0000-4000-0000-011c895904a4(jetbrains.mps.ide.actions)" implicit="true" />
     <import index="lui2" ref="8865b7a8-5271-43d3-884c-6fd1d9cfdd34/java:org.jetbrains.mps.openapi.module(MPS.OpenAPI/)" implicit="true" />
@@ -45,6 +46,7 @@
       </concept>
       <concept id="1203071646776" name="jetbrains.mps.lang.plugin.structure.ActionDeclaration" flags="ng" index="sE7Ow">
         <property id="1205250923097" name="caption" index="2uzpH1" />
+        <property id="7458746815261976739" name="requiredAccess" index="2YLI8m" />
         <child id="394857668356997869" name="places" index="med8o" />
         <child id="1203083196627" name="updateBlock" index="tmbBb" />
         <child id="1203083461638" name="executeFunction" index="tncku" />
@@ -113,6 +115,9 @@
         <child id="1224071154657" name="classifierType" index="0kSFW" />
         <child id="1224071154656" name="expression" index="0kSFX" />
       </concept>
+      <concept id="1082485599095" name="jetbrains.mps.baseLanguage.structure.BlockStatement" flags="nn" index="9aQIb">
+        <child id="1082485599096" name="statements" index="9aQI4" />
+      </concept>
       <concept id="1215693861676" name="jetbrains.mps.baseLanguage.structure.BaseAssignmentExpression" flags="nn" index="d038R">
         <child id="1068498886297" name="rValue" index="37vLTx" />
         <child id="1068498886295" name="lValue" index="37vLTJ" />
@@ -124,6 +129,10 @@
         <child id="1197027771414" name="operand" index="2Oq$k0" />
         <child id="1197027833540" name="operation" index="2OqNvi" />
       </concept>
+      <concept id="1083260308424" name="jetbrains.mps.baseLanguage.structure.EnumConstantReference" flags="nn" index="Rm8GO">
+        <reference id="1083260308426" name="enumConstantDeclaration" index="Rm8GQ" />
+        <reference id="1144432896254" name="enumClass" index="1Px2BO" />
+      </concept>
       <concept id="1145552977093" name="jetbrains.mps.baseLanguage.structure.GenericNewExpression" flags="nn" index="2ShNRf">
         <child id="1145553007750" name="creator" index="2ShVmc" />
       </concept>
@@ -148,6 +157,7 @@
         <reference id="1144433057691" name="classifier" index="1PxDUh" />
       </concept>
       <concept id="1070534058343" name="jetbrains.mps.baseLanguage.structure.NullLiteral" flags="nn" index="10Nm6u" />
+      <concept id="1070534644030" name="jetbrains.mps.baseLanguage.structure.BooleanType" flags="in" index="10P_77" />
       <concept id="1070534934090" name="jetbrains.mps.baseLanguage.structure.CastExpression" flags="nn" index="10QFUN">
         <child id="1070534934091" name="type" index="10QFUM" />
         <child id="1070534934092" name="expression" index="10QFUP" />
@@ -180,12 +190,19 @@
       </concept>
       <concept id="1068580123157" name="jetbrains.mps.baseLanguage.structure.Statement" flags="nn" index="3clFbH" />
       <concept id="1068580123159" name="jetbrains.mps.baseLanguage.structure.IfStatement" flags="nn" index="3clFbJ">
+        <child id="1082485599094" name="ifFalseStatement" index="9aQIa" />
         <child id="1068580123160" name="condition" index="3clFbw" />
         <child id="1068580123161" name="ifTrue" index="3clFbx" />
       </concept>
       <concept id="1068580123136" name="jetbrains.mps.baseLanguage.structure.StatementList" flags="sn" stub="5293379017992965193" index="3clFbS">
         <child id="1068581517665" name="statement" index="3cqZAp" />
       </concept>
+      <concept id="1068580123137" name="jetbrains.mps.baseLanguage.structure.BooleanConstant" flags="nn" index="3clFbT">
+        <property id="1068580123138" name="value" index="3clFbU" />
+      </concept>
+      <concept id="1068580320020" name="jetbrains.mps.baseLanguage.structure.IntegerConstant" flags="nn" index="3cmrfG">
+        <property id="1068580320021" name="value" index="3cmrfH" />
+      </concept>
       <concept id="1068581242875" name="jetbrains.mps.baseLanguage.structure.PlusExpression" flags="nn" index="3cpWs3" />
       <concept id="1068581242878" name="jetbrains.mps.baseLanguage.structure.ReturnStatement" flags="nn" index="3cpWs6">
         <child id="1068581517676" name="expression" index="3cqZAk" />
@@ -198,6 +215,9 @@
       <concept id="1079359253375" name="jetbrains.mps.baseLanguage.structure.ParenthesizedExpression" flags="nn" index="1eOMI4">
         <child id="1079359253376" name="expression" index="1eOMHV" />
       </concept>
+      <concept id="1081516740877" name="jetbrains.mps.baseLanguage.structure.NotExpression" flags="nn" index="3fqX7Q">
+        <child id="1081516765348" name="expression" index="3fr31v" />
+      </concept>
       <concept id="1204053956946" name="jetbrains.mps.baseLanguage.structure.IMethodCall" flags="ng" index="1ndlxa">
         <reference id="1068499141037" name="baseMethodDeclaration" index="37wK5l" />
         <child id="1068499141038" name="actualArgument" index="37wK5m" />
@@ -226,8 +246,14 @@
       <concept id="1178549954367" name="jetbrains.mps.baseLanguage.structure.IVisible" flags="ng" index="1B3ioH">
         <child id="1178549979242" name="visibility" index="1B3o_S" />
       </concept>
+      <concept id="1163668896201" name="jetbrains.mps.baseLanguage.structure.TernaryOperatorExpression" flags="nn" index="3K4zz7">
+        <child id="1163668914799" name="condition" index="3K4Cdx" />
+        <child id="1163668922816" name="ifTrue" index="3K4E3e" />
+        <child id="1163668934364" name="ifFalse" index="3K4GZi" />
+      </concept>
       <concept id="1146644602865" name="jetbrains.mps.baseLanguage.structure.PublicVisibility" flags="nn" index="3Tm1VV" />
       <concept id="1146644623116" name="jetbrains.mps.baseLanguage.structure.PrivateVisibility" flags="nn" index="3Tm6S6" />
+      <concept id="1080120340718" name="jetbrains.mps.baseLanguage.structure.AndExpression" flags="nn" index="1Wc70l" />
       <concept id="1170345865475" name="jetbrains.mps.baseLanguage.structure.AnonymousClass" flags="ig" index="1Y3b0j">
         <reference id="1170346070688" name="classifier" index="1Y3XeK" />
       </concept>
@@ -630,6 +656,13 @@
         <property role="pLAjf" value="VK_I" />
       </node>
     </node>
+    <node concept="Zd509" id="1VCXHWuksjx" role="Zd508">
+      <ref role="1bYAoF" node="1VCXHWuhkT$" resolve="Diagram_SelectAll" />
+      <node concept="pLAjd" id="1VCXHWuksjy" role="Zd501">
+        <property role="pLAjc" value="ctrl" />
+        <property role="pLAjf" value="VK_A" />
+      </node>
+    </node>
   </node>
   <node concept="sE7Ow" id="5K7KC_qu7$R">
     <property role="TrG5h" value="RotateBoxClockwiseAction" />
@@ -1277,6 +1310,355 @@
       <node concept="3cqZAl" id="5IQEFjDGWwS" role="3clF45" />
       <node concept="3Tm1VV" id="5IQEFjDGWwT" role="1B3o_S" />
     </node>
+    <node concept="2YIFZL" id="1VCXHWuhxRh" role="jymVt">
+      <property role="DiZV1" value="false" />
+      <property role="od$2w" value="false" />
+      <property role="TrG5h" value="selectAll" />
+      <node concept="37vLTG" id="1VCXHWuhxRi" role="3clF46">
+        <property role="TrG5h" value="editorContext" />
+        <node concept="3uibUv" id="1VCXHWuhxRj" role="1tU5fm">
+          <ref role="3uigEE" to="cj4x:~EditorContext" resolve="EditorContext" />
+        </node>
+      </node>
+      <node concept="3clFbS" id="1VCXHWuhxRk" role="3clF47">
+        <node concept="3cpWs8" id="1VCXHWuhxRl" role="3cqZAp">
+          <node concept="3cpWsn" id="1VCXHWuhxRm" role="3cpWs9">
+            <property role="TrG5h" value="activeDiagram" />
+            <node concept="3uibUv" id="1VCXHWuhxRn" role="1tU5fm">
+              <ref role="3uigEE" to="r3rm:5S8_I2FY6vo" resolve="BaseDiagramECell" />
+            </node>
+            <node concept="1rXfSq" id="1VCXHWuhxRo" role="33vP2m">
+              <ref role="37wK5l" node="5IQEFjDH1lq" resolve="getActiveDiagram" />
+              <node concept="37vLTw" id="1VCXHWuhxRp" role="37wK5m">
+                <ref role="3cqZAo" node="1VCXHWuhxRi" resolve="editorContext" />
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbJ" id="1VCXHWuhxRq" role="3cqZAp">
+          <node concept="3clFbS" id="1VCXHWuhxRr" role="3clFbx">
+            <node concept="3cpWs6" id="1VCXHWuhxRs" role="3cqZAp" />
+          </node>
+          <node concept="3clFbC" id="1VCXHWuhxRt" role="3clFbw">
+            <node concept="10Nm6u" id="1VCXHWuhxRu" role="3uHU7w" />
+            <node concept="37vLTw" id="1VCXHWuhxRv" role="3uHU7B">
+              <ref role="3cqZAo" node="1VCXHWuhxRm" resolve="activeDiagram" />
+            </node>
+          </node>
+        </node>
+        <node concept="3cpWs8" id="1VCXHWuhxRw" role="3cqZAp">
+          <node concept="3cpWsn" id="1VCXHWuhxRx" role="3cpWs9">
+            <property role="TrG5h" value="graph" />
+            <node concept="3uibUv" id="1VCXHWuhxRy" role="1tU5fm">
+              <ref role="3uigEE" to="r3rm:190K99KhFiz" resolve="MyGraph" />
+            </node>
+            <node concept="2OqwBi" id="1VCXHWuhxRz" role="33vP2m">
+              <node concept="37vLTw" id="1VCXHWuhxR$" role="2Oq$k0">
+                <ref role="3cqZAo" node="1VCXHWuhxRm" resolve="activeDiagram" />
+              </node>
+              <node concept="liA8E" id="1VCXHWuhxR_" role="2OqNvi">
+                <ref role="37wK5l" to="r3rm:4HMzb$XPdI$" resolve="getContextGraph" />
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3cpWs8" id="1VCXHWuh_h4" role="3cqZAp">
+          <node concept="3cpWsn" id="1VCXHWuh_h5" role="3cpWs9">
+            <property role="TrG5h" value="graphComponent" />
+            <node concept="3uibUv" id="1VCXHWuh_84" role="1tU5fm">
+              <ref role="3uigEE" to="r3rm:190K99KyNov" resolve="MyGraphComponent" />
+            </node>
+            <node concept="2OqwBi" id="1VCXHWuh_h6" role="33vP2m">
+              <node concept="37vLTw" id="1VCXHWuh_h7" role="2Oq$k0">
+                <ref role="3cqZAo" node="1VCXHWuhxRx" resolve="graph" />
+              </node>
+              <node concept="liA8E" id="1VCXHWuh_h8" role="2OqNvi">
+                <ref role="37wK5l" to="r3rm:eyrvBdlDbJ" resolve="getGraphComponent" />
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3cpWs8" id="4W8p7POguIM" role="3cqZAp">
+          <node concept="3cpWsn" id="4W8p7POguIN" role="3cpWs9">
+            <property role="TrG5h" value="mpsCell" />
+            <node concept="3uibUv" id="4W8p7POgt7l" role="1tU5fm">
+              <ref role="3uigEE" to="r3rm:3YJYJT3M3W" resolve="MPSCell" />
+            </node>
+            <node concept="2OqwBi" id="4W8p7POguIO" role="33vP2m">
+              <node concept="2OqwBi" id="4W8p7POguIP" role="2Oq$k0">
+                <node concept="37vLTw" id="4W8p7POguIQ" role="2Oq$k0">
+                  <ref role="3cqZAo" node="1VCXHWuh_h5" resolve="graphComponent" />
+                </node>
+                <node concept="liA8E" id="4W8p7POguIR" role="2OqNvi">
+                  <ref role="37wK5l" to="r3rm:2DPWhIs46oP" resolve="getCellEditor" />
+                </node>
+              </node>
+              <node concept="liA8E" id="4W8p7POguIS" role="2OqNvi">
+                <ref role="37wK5l" to="r3rm:itssr78hM5" resolve="getMPSCell" />
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3cpWs8" id="1VCXHWuirvC" role="3cqZAp">
+          <node concept="3cpWsn" id="1VCXHWuirvD" role="3cpWs9">
+            <property role="TrG5h" value="editorCell" />
+            <node concept="3uibUv" id="1VCXHWuirmv" role="1tU5fm">
+              <ref role="3uigEE" to="f4zo:~EditorCell" resolve="EditorCell" />
+            </node>
+            <node concept="3K4zz7" id="4W8p7POgzyJ" role="33vP2m">
+              <node concept="10Nm6u" id="4W8p7POgzO_" role="3K4E3e" />
+              <node concept="3clFbC" id="4W8p7POgz7R" role="3K4Cdx">
+                <node concept="10Nm6u" id="4W8p7POgzlo" role="3uHU7w" />
+                <node concept="37vLTw" id="4W8p7POgxzY" role="3uHU7B">
+                  <ref role="3cqZAo" node="4W8p7POguIN" resolve="mpsCell" />
+                </node>
+              </node>
+              <node concept="2OqwBi" id="itssr78qz$" role="3K4GZi">
+                <node concept="37vLTw" id="4W8p7POguIT" role="2Oq$k0">
+                  <ref role="3cqZAo" node="4W8p7POguIN" resolve="mpsCell" />
+                </node>
+                <node concept="liA8E" id="itssr78r0b" role="2OqNvi">
+                  <ref role="37wK5l" to="r3rm:4fHmSnadO4g" resolve="getEditorCell" />
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbJ" id="1VCXHWuixDs" role="3cqZAp">
+          <node concept="3clFbS" id="1VCXHWuixDu" role="3clFbx">
+            <node concept="3clFbF" id="5nRFCQp2Uuu" role="3cqZAp">
+              <node concept="2YIFZM" id="5nRFCQp2Uuv" role="3clFbG">
+                <ref role="1Pybhc" node="5IQEFjDGWsk" resolve="DiagramIdeaActionsUtil" />
+                <ref role="37wK5l" node="5nRFCQp2TyY" resolve="selectLabel" />
+                <node concept="37vLTw" id="5nRFCQp2Uuw" role="37wK5m">
+                  <ref role="3cqZAo" node="1VCXHWuirvD" resolve="editorCell" />
+                </node>
+                <node concept="37vLTw" id="5nRFCQp2Uux" role="37wK5m">
+                  <ref role="3cqZAo" node="1VCXHWuh_h5" resolve="graphComponent" />
+                </node>
+              </node>
+            </node>
+          </node>
+          <node concept="1Wc70l" id="4W8p7POnhCU" role="3clFbw">
+            <node concept="3y3z36" id="1VCXHWuiy0X" role="3uHU7B">
+              <node concept="37vLTw" id="1VCXHWuixMh" role="3uHU7B">
+                <ref role="3cqZAo" node="1VCXHWuirvD" resolve="editorCell" />
+              </node>
+              <node concept="10Nm6u" id="1VCXHWuiy9Q" role="3uHU7w" />
+            </node>
+            <node concept="2ZW3vV" id="1VCXHWukBux" role="3uHU7w">
+              <node concept="3uibUv" id="1VCXHWukBI5" role="2ZW6by">
+                <ref role="3uigEE" to="f4zo:~EditorCell_Label" resolve="EditorCell_Label" />
+              </node>
+              <node concept="37vLTw" id="1VCXHWukBg8" role="2ZW6bz">
+                <ref role="3cqZAo" node="1VCXHWuirvD" resolve="editorCell" />
+              </node>
+            </node>
+          </node>
+          <node concept="9aQIb" id="4W8p7POniyn" role="9aQIa">
+            <node concept="3clFbS" id="4W8p7POniyo" role="9aQI4">
+              <node concept="3cpWs8" id="5nRFCQoyWPn" role="3cqZAp">
+                <node concept="3cpWsn" id="5nRFCQoyWPo" role="3cpWs9">
+                  <property role="TrG5h" value="selection" />
+                  <node concept="3uibUv" id="5nRFCQoyW1u" role="1tU5fm">
+                    <ref role="3uigEE" to="lwvz:~Selection" resolve="Selection" />
+                  </node>
+                  <node concept="2OqwBi" id="5nRFCQoyWPp" role="33vP2m">
+                    <node concept="2OqwBi" id="5nRFCQoyWPq" role="2Oq$k0">
+                      <node concept="37vLTw" id="5nRFCQoyWPr" role="2Oq$k0">
+                        <ref role="3cqZAo" node="1VCXHWuhxRi" resolve="editorContext" />
+                      </node>
+                      <node concept="liA8E" id="5nRFCQoyWPs" role="2OqNvi">
+                        <ref role="37wK5l" to="cj4x:~EditorContext.getSelectionManager()" resolve="getSelectionManager" />
+                      </node>
+                    </node>
+                    <node concept="liA8E" id="5nRFCQoyWPt" role="2OqNvi">
+                      <ref role="37wK5l" to="lwvz:~SelectionManager.getSelection()" resolve="getSelection" />
+                    </node>
+                  </node>
+                </node>
+              </node>
+              <node concept="3cpWs8" id="5nRFCQp6kho" role="3cqZAp">
+                <node concept="3cpWsn" id="5nRFCQp6khr" role="3cpWs9">
+                  <property role="TrG5h" value="labelFound" />
+                  <node concept="10P_77" id="5nRFCQp6khm" role="1tU5fm" />
+                  <node concept="3clFbT" id="5nRFCQp6ldj" role="33vP2m" />
+                </node>
+              </node>
+              <node concept="3clFbF" id="5nRFCQoDOH0" role="3cqZAp">
+                <node concept="2OqwBi" id="5nRFCQoDQ9R" role="3clFbG">
+                  <node concept="2OqwBi" id="5nRFCQoDP56" role="2Oq$k0">
+                    <node concept="37vLTw" id="5nRFCQoDOGY" role="2Oq$k0">
+                      <ref role="3cqZAo" node="5nRFCQoyWPo" resolve="selection" />
+                    </node>
+                    <node concept="liA8E" id="5nRFCQoDPjG" role="2OqNvi">
+                      <ref role="37wK5l" to="lwvz:~Selection.getSelectedCells()" resolve="getSelectedCells" />
+                    </node>
+                  </node>
+                  <node concept="liA8E" id="5nRFCQoDRDc" role="2OqNvi">
+                    <ref role="37wK5l" to="wyt6:~Iterable.forEach(java.util.function.Consumer)" resolve="forEach" />
+                    <node concept="1bVj0M" id="5nRFCQoDS8D" role="37wK5m">
+                      <node concept="37vLTG" id="5nRFCQoDT6f" role="1bW2Oz">
+                        <property role="TrG5h" value="ec" />
+                        <node concept="3uibUv" id="5nRFCQoDU2j" role="1tU5fm">
+                          <ref role="3uigEE" to="f4zo:~EditorCell" resolve="EditorCell" />
+                        </node>
+                      </node>
+                      <node concept="3clFbS" id="5nRFCQoDS8E" role="1bW5cS">
+                        <node concept="3clFbJ" id="5nRFCQoVSDY" role="3cqZAp">
+                          <node concept="3clFbS" id="5nRFCQoVSE0" role="3clFbx">
+                            <node concept="3clFbF" id="5nRFCQp2Tz4" role="3cqZAp">
+                              <node concept="2YIFZM" id="5nRFCQp2Tz3" role="3clFbG">
+                                <ref role="1Pybhc" node="5IQEFjDGWsk" resolve="DiagramIdeaActionsUtil" />
+                                <ref role="37wK5l" node="5nRFCQp2TyY" resolve="selectLabel" />
+                                <node concept="37vLTw" id="5nRFCQp2Tz1" role="37wK5m">
+                                  <ref role="3cqZAo" node="5nRFCQoDT6f" resolve="ec" />
+                                </node>
+                                <node concept="37vLTw" id="5nRFCQp2Tz2" role="37wK5m">
+                                  <ref role="3cqZAo" node="1VCXHWuh_h5" resolve="graphComponent" />
+                                </node>
+                              </node>
+                            </node>
+                            <node concept="3clFbF" id="5nRFCQp6lJv" role="3cqZAp">
+                              <node concept="37vLTI" id="5nRFCQp6mdm" role="3clFbG">
+                                <node concept="3clFbT" id="5nRFCQp6mpR" role="37vLTx">
+                                  <property role="3clFbU" value="true" />
+                                </node>
+                                <node concept="37vLTw" id="5nRFCQp6lJt" role="37vLTJ">
+                                  <ref role="3cqZAo" node="5nRFCQp6khr" resolve="labelFound" />
+                                </node>
+                              </node>
+                            </node>
+                          </node>
+                          <node concept="2ZW3vV" id="5nRFCQoZrUQ" role="3clFbw">
+                            <node concept="3uibUv" id="5nRFCQoZrUR" role="2ZW6by">
+                              <ref role="3uigEE" to="f4zo:~EditorCell_Label" resolve="EditorCell_Label" />
+                            </node>
+                            <node concept="37vLTw" id="5nRFCQoZrUS" role="2ZW6bz">
+                              <ref role="3cqZAo" node="5nRFCQoDT6f" resolve="ec" />
+                            </node>
+                          </node>
+                        </node>
+                      </node>
+                    </node>
+                  </node>
+                </node>
+              </node>
+              <node concept="3clFbJ" id="5nRFCQp6mXx" role="3cqZAp">
+                <node concept="3clFbS" id="5nRFCQp6mXz" role="3clFbx">
+                  <node concept="3clFbF" id="4W8p7POobzy" role="3cqZAp">
+                    <node concept="2OqwBi" id="4W8p7POocLa" role="3clFbG">
+                      <node concept="37vLTw" id="5nRFCQoyWPu" role="2Oq$k0">
+                        <ref role="3cqZAo" node="5nRFCQoyWPo" resolve="selection" />
+                      </node>
+                      <node concept="liA8E" id="4W8p7POod6F" role="2OqNvi">
+                        <ref role="37wK5l" to="lwvz:~Selection.executeAction(jetbrains.mps.openapi.editor.cells.CellActionType)" resolve="executeAction" />
+                        <node concept="Rm8GO" id="4W8p7POodyt" role="37wK5m">
+                          <ref role="Rm8GQ" to="f4zo:~CellActionType.SELECT_ALL" resolve="SELECT_ALL" />
+                          <ref role="1Px2BO" to="f4zo:~CellActionType" resolve="CellActionType" />
+                        </node>
+                      </node>
+                    </node>
+                  </node>
+                </node>
+                <node concept="3fqX7Q" id="5nRFCQp6nab" role="3clFbw">
+                  <node concept="37vLTw" id="5nRFCQp6nmU" role="3fr31v">
+                    <ref role="3cqZAo" node="5nRFCQp6khr" resolve="labelFound" />
+                  </node>
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+      <node concept="3cqZAl" id="1VCXHWuhxSr" role="3clF45" />
+      <node concept="3Tm1VV" id="1VCXHWuhxSs" role="1B3o_S" />
+    </node>
+    <node concept="2tJIrI" id="5nRFCQp6iRg" role="jymVt" />
+    <node concept="2YIFZL" id="5nRFCQp2TyY" role="jymVt">
+      <property role="TrG5h" value="selectLabel" />
+      <node concept="3Tm6S6" id="5nRFCQp2TyZ" role="1B3o_S" />
+      <node concept="3cqZAl" id="5nRFCQp2Tz0" role="3clF45" />
+      <node concept="37vLTG" id="5nRFCQp2TyQ" role="3clF46">
+        <property role="TrG5h" value="ec" />
+        <node concept="3uibUv" id="5nRFCQp2TyR" role="1tU5fm">
+          <ref role="3uigEE" to="f4zo:~EditorCell" resolve="EditorCell" />
+        </node>
+      </node>
+      <node concept="37vLTG" id="5nRFCQp2TyS" role="3clF46">
+        <property role="TrG5h" value="graphComponent" />
+        <node concept="3uibUv" id="5nRFCQp2TyT" role="1tU5fm">
+          <ref role="3uigEE" to="r3rm:190K99KyNov" resolve="MyGraphComponent" />
+        </node>
+      </node>
+      <node concept="3clFbS" id="5nRFCQp2Tys" role="3clF47">
+        <node concept="3cpWs8" id="5nRFCQp2Tyt" role="3cqZAp">
+          <node concept="3cpWsn" id="5nRFCQp2Tyu" role="3cpWs9">
+            <property role="TrG5h" value="label" />
+            <node concept="3uibUv" id="5nRFCQp2Tyv" role="1tU5fm">
+              <ref role="3uigEE" to="f4zo:~EditorCell_Label" resolve="EditorCell_Label" />
+            </node>
+            <node concept="1eOMI4" id="5nRFCQp2Tyw" role="33vP2m">
+              <node concept="10QFUN" id="5nRFCQp2Tyx" role="1eOMHV">
+                <node concept="37vLTw" id="5nRFCQp2TyU" role="10QFUP">
+                  <ref role="3cqZAo" node="5nRFCQp2TyQ" resolve="ec" />
+                </node>
+                <node concept="3uibUv" id="5nRFCQp2Tyz" role="10QFUM">
+                  <ref role="3uigEE" to="f4zo:~EditorCell_Label" resolve="EditorCell_Label" />
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbF" id="5nRFCQp2Ty$" role="3cqZAp">
+          <node concept="2OqwBi" id="5nRFCQp2Ty_" role="3clFbG">
+            <node concept="2OqwBi" id="5nRFCQp2TyA" role="2Oq$k0">
+              <node concept="2OqwBi" id="5nRFCQp2TyB" role="2Oq$k0">
+                <node concept="37vLTw" id="5nRFCQp2TyV" role="2Oq$k0">
+                  <ref role="3cqZAo" node="5nRFCQp2TyS" resolve="graphComponent" />
+                </node>
+                <node concept="liA8E" id="5nRFCQp2TyD" role="2OqNvi">
+                  <ref role="37wK5l" to="r3rm:6zxgcXkQTCR" resolve="getEditorComponent" />
+                </node>
+              </node>
+              <node concept="liA8E" id="5nRFCQp2TyE" role="2OqNvi">
+                <ref role="37wK5l" to="exr9:~EditorComponent.getSelectionManager()" resolve="getSelectionManager" />
+              </node>
+            </node>
+            <node concept="liA8E" id="5nRFCQp2TyF" role="2OqNvi">
+              <ref role="37wK5l" to="lwvz:~SelectionManager.setSelection(jetbrains.mps.openapi.editor.cells.EditorCell_Label,int,int,int)" resolve="setSelection" />
+              <node concept="37vLTw" id="5nRFCQp2TyG" role="37wK5m">
+                <ref role="3cqZAo" node="5nRFCQp2Tyu" resolve="label" />
+              </node>
+              <node concept="2OqwBi" id="5nRFCQp2TyH" role="37wK5m">
+                <node concept="37vLTw" id="5nRFCQp2TyI" role="2Oq$k0">
+                  <ref role="3cqZAo" node="5nRFCQp2Tyu" resolve="label" />
+                </node>
+                <node concept="liA8E" id="5nRFCQp2TyJ" role="2OqNvi">
+                  <ref role="37wK5l" to="f4zo:~EditorCell_Label.getCaretPosition()" resolve="getCaretPosition" />
+                </node>
+              </node>
+              <node concept="3cmrfG" id="5nRFCQp2TyK" role="37wK5m">
+                <property role="3cmrfH" value="0" />
+              </node>
+              <node concept="2OqwBi" id="5nRFCQp2TyL" role="37wK5m">
+                <node concept="2OqwBi" id="5nRFCQp2TyM" role="2Oq$k0">
+                  <node concept="37vLTw" id="5nRFCQp2TyN" role="2Oq$k0">
+                    <ref role="3cqZAo" node="5nRFCQp2Tyu" resolve="label" />
+                  </node>
+                  <node concept="liA8E" id="5nRFCQp2TyO" role="2OqNvi">
+                    <ref role="37wK5l" to="f4zo:~EditorCell_Label.getText()" resolve="getText" />
+                  </node>
+                </node>
+                <node concept="liA8E" id="5nRFCQp2TyP" role="2OqNvi">
+                  <ref role="37wK5l" to="wyt6:~String.length()" resolve="length" />
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+    </node>
     <node concept="2tJIrI" id="5IQEFjDH2nZ" role="jymVt" />
     <node concept="2YIFZL" id="5IQEFjDGWLj" role="jymVt">
       <property role="DiZV1" value="false" />
@@ -1743,5 +2125,50 @@
       <ref role="3uigEE" to="nkm5:4KemxTdS2xO" resolve="IConnectionTypesExtensionProvider" />
     </node>
   </node>
+  <node concept="sE7Ow" id="1VCXHWuhkT$">
+    <property role="TrG5h" value="Diagram_SelectAll" />
+    <property role="2uzpH1" value="Diagram: Select All" />
+    <property role="2YLI8m" value="6u2MFnph2wS/none" />
+    <node concept="1DS2jV" id="1VCXHWuhvDd" role="1NuT2Z">
+      <property role="TrG5h" value="editorContext" />
+      <ref role="1DUlNI" to="k3nr:~MPSEditorDataKeys.EDITOR_CONTEXT" resolve="EDITOR_CONTEXT" />
+      <node concept="1oajcY" id="1VCXHWuhvDe" role="1oa70y" />
+    </node>
+    <node concept="tnohg" id="1VCXHWuhkT_" role="tncku">
+      <node concept="3clFbS" id="1VCXHWuhkTA" role="2VODD2">
+        <node concept="3clFbF" id="1VCXHWuizpf" role="3cqZAp">
+          <node concept="2YIFZM" id="1VCXHWuizpL" role="3clFbG">
+            <ref role="37wK5l" node="1VCXHWuhxRh" resolve="selectAll" />
+            <ref role="1Pybhc" node="5IQEFjDGWsk" resolve="DiagramIdeaActionsUtil" />
+            <node concept="2OqwBi" id="1VCXHWuizqn" role="37wK5m">
+              <node concept="2WthIp" id="1VCXHWuizqq" role="2Oq$k0" />
+              <node concept="1DTwFV" id="1VCXHWuizqs" role="2OqNvi">
+                <ref role="2WH_rO" node="1VCXHWuhvDd" resolve="editorContext" />
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+    </node>
+    <node concept="2ScWuX" id="1VCXHWukvAp" role="tmbBb">
+      <node concept="3clFbS" id="1VCXHWukvAq" role="2VODD2">
+        <node concept="3clFbF" id="1VCXHWukwVe" role="3cqZAp">
+          <node concept="3y3z36" id="1VCXHWukxZ5" role="3clFbG">
+            <node concept="10Nm6u" id="1VCXHWukynq" role="3uHU7w" />
+            <node concept="2YIFZM" id="1VCXHWukwZC" role="3uHU7B">
+              <ref role="37wK5l" node="5IQEFjDH1lq" resolve="getActiveDiagram" />
+              <ref role="1Pybhc" node="5IQEFjDGWsk" resolve="DiagramIdeaActionsUtil" />
+              <node concept="2OqwBi" id="1VCXHWukxbJ" role="37wK5m">
+                <node concept="2WthIp" id="1VCXHWukxbM" role="2Oq$k0" />
+                <node concept="1DTwFV" id="1VCXHWukxbO" role="2OqNvi">
+                  <ref role="2WH_rO" node="1VCXHWuhvDd" resolve="editorContext" />
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+    </node>
+  </node>
 </model>
 
diff --git a/code/grammarcells/languages/com.mbeddr.mpsutil.grammarcells.sandboxlang/models/com/mbeddr/mpsutil/grammarcells/sandboxlang/editor.mps b/code/grammarcells/languages/com.mbeddr.mpsutil.grammarcells.sandboxlang/models/com/mbeddr/mpsutil/grammarcells/sandboxlang/editor.mps
index 9e4717be5..b5ceb661c 100644
--- a/code/grammarcells/languages/com.mbeddr.mpsutil.grammarcells.sandboxlang/models/com/mbeddr/mpsutil/grammarcells/sandboxlang/editor.mps
+++ b/code/grammarcells/languages/com.mbeddr.mpsutil.grammarcells.sandboxlang/models/com/mbeddr/mpsutil/grammarcells/sandboxlang/editor.mps
@@ -554,13 +554,13 @@
               </node>
               <node concept="2xdQw9" id="6gjbwab9Q8x" role="3cqZAp">
                 <node concept="3cpWs3" id="6gjbwab9Q8y" role="9lYJi">
+                  <node concept="Xl_RD" id="6gjbwab9Q8$" role="3uHU7B">
+                    <property role="Xl_RC" value="SubstitutedNode:" />
+                  </node>
                   <node concept="2OqwBi" id="7LJ_vJOlkJd" role="3uHU7w">
                     <node concept="3gMLhr" id="6gjbwab9Qdc" role="2Oq$k0" />
                     <node concept="2Iv5rx" id="7LJ_vJOlkJe" role="2OqNvi" />
                   </node>
-                  <node concept="Xl_RD" id="6gjbwab9Q8$" role="3uHU7B">
-                    <property role="Xl_RC" value="SubstitutedNode:" />
-                  </node>
                 </node>
               </node>
               <node concept="2xdQw9" id="6gjbwab9Qem" role="3cqZAp">
@@ -601,13 +601,13 @@
               </node>
               <node concept="2xdQw9" id="6gjbwab9QSt" role="3cqZAp">
                 <node concept="3cpWs3" id="6gjbwab9QSu" role="9lYJi">
+                  <node concept="Xl_RD" id="6gjbwab9QSw" role="3uHU7B">
+                    <property role="Xl_RC" value="Node:" />
+                  </node>
                   <node concept="2OqwBi" id="7LJ_vJOlkJL" role="3uHU7w">
                     <node concept="313q4" id="6gjbwab9QW2" role="2Oq$k0" />
                     <node concept="2Iv5rx" id="7LJ_vJOlkJM" role="2OqNvi" />
                   </node>
-                  <node concept="Xl_RD" id="6gjbwab9QSw" role="3uHU7B">
-                    <property role="Xl_RC" value="Node:" />
-                  </node>
                 </node>
               </node>
               <node concept="2xdQw9" id="6gjbwab9QXc" role="3cqZAp">
@@ -705,13 +705,13 @@
             <node concept="3clFbS" id="6gjbwab3Srt" role="2VODD2">
               <node concept="2xdQw9" id="6gjbwab3S$R" role="3cqZAp">
                 <node concept="3cpWs3" id="6gjbwab3S$S" role="9lYJi">
+                  <node concept="Xl_RD" id="6gjbwab3S$U" role="3uHU7B">
+                    <property role="Xl_RC" value="Node:" />
+                  </node>
                   <node concept="2OqwBi" id="7LJ_vJOlkKj" role="3uHU7w">
                     <node concept="313q4" id="6gjbwab3S$T" role="2Oq$k0" />
                     <node concept="2Iv5rx" id="7LJ_vJOlkKk" role="2OqNvi" />
                   </node>
-                  <node concept="Xl_RD" id="6gjbwab3S$U" role="3uHU7B">
-                    <property role="Xl_RC" value="Node:" />
-                  </node>
                 </node>
               </node>
               <node concept="2xdQw9" id="6gjbwab3S$V" role="3cqZAp">
@@ -728,13 +728,13 @@
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               <node concept="2xdQw9" id="6gjbwab3SAv" role="3cqZAp">
                 <node concept="3cpWs3" id="6gjbwab3SAw" role="9lYJi">
+                  <node concept="Xl_RD" id="6gjbwab3SAy" role="3uHU7B">
+                    <property role="Xl_RC" value="Node:" />
+                  </node>
                   <node concept="2OqwBi" id="7LJ_vJOlkK_" role="3uHU7w">
                     <node concept="313q4" id="6gjbwab3SAx" role="2Oq$k0" />
                     <node concept="2Iv5rx" id="7LJ_vJOlkKA" role="2OqNvi" />
                   </node>
-                  <node concept="Xl_RD" id="6gjbwab3SAy" role="3uHU7B">
-                    <property role="Xl_RC" value="Node:" />
-                  </node>
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               </node>
               <node concept="2xdQw9" id="6gjbwab3SAz" role="3cqZAp">
@@ -751,13 +751,13 @@
             <node concept="3clFbS" id="6gjbwab5uMP" role="2VODD2">
               <node concept="2xdQw9" id="6gjbwab5uW0" role="3cqZAp">
                 <node concept="3cpWs3" id="6gjbwab5uW1" role="9lYJi">
+                  <node concept="Xl_RD" id="6gjbwab5uW3" role="3uHU7B">
+                    <property role="Xl_RC" value="WrappedNode:" />
+                  </node>
                   <node concept="2OqwBi" id="7LJ_vJOlkKR" role="3uHU7w">
                     <node concept="2e73FJ" id="6gjbwab5v0B" role="2Oq$k0" />
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-                  <node concept="Xl_RD" id="6gjbwab5uW3" role="3uHU7B">
-                    <property role="Xl_RC" value="WrappedNode:" />
-                  </node>
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               <node concept="2xdQw9" id="6gjbwab5v5a" role="3cqZAp">
@@ -943,6 +943,9 @@
           </node>
         </node>
         <node concept="l2Vlx" id="1PeMnANftFz" role="2iSdaV" />
+        <node concept="2SqB2G" id="3aFJVZlyO6O" role="2SqHTX">
+          <property role="TrG5h" value="binaryExpressionRoot" />
+        </node>
       </node>
       <node concept="2ElW$n" id="77A3HzrI7kj" role="2El2Yn">
         <node concept="2OqwBi" id="77A3HzrKduh" role="2EmT7a">
@@ -1229,13 +1232,13 @@
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             <node concept="2xdQw9" id="6gjbwaaGgIn" role="3cqZAp">
               <node concept="3cpWs3" id="6gjbwaaGgIo" role="9lYJi">
+                <node concept="Xl_RD" id="6gjbwaaGgIq" role="3uHU7B">
+                  <property role="Xl_RC" value="Node:" />
+                </node>
                 <node concept="2OqwBi" id="7LJ_vJOlkLr" role="3uHU7w">
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             <node concept="2xdQw9" id="6gjbwaaGgIr" role="3cqZAp">
@@ -1252,13 +1255,13 @@
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             <node concept="2xdQw9" id="6gjbwab2hEU" role="3cqZAp">
               <node concept="3cpWs3" id="6gjbwab2hEV" role="9lYJi">
+                <node concept="Xl_RD" id="6gjbwab2hEX" role="3uHU7B">
+                  <property role="Xl_RC" value="Node:" />
+                </node>
                 <node concept="2OqwBi" id="7LJ_vJOlkLH" role="3uHU7w">
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-                </node>
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             <node concept="2xdQw9" id="6gjbwab2hEY" role="3cqZAp">
@@ -1406,13 +1409,13 @@
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             <node concept="2xdQw9" id="6gjbwaaLzag" role="3cqZAp">
               <node concept="3cpWs3" id="6gjbwaaLzah" role="9lYJi">
+                <node concept="Xl_RD" id="6gjbwaaLzaj" role="3uHU7B">
+                  <property role="Xl_RC" value="Node:" />
+                </node>
                 <node concept="2OqwBi" id="7LJ_vJOlkM7" role="3uHU7w">
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-                  <property role="Xl_RC" value="Node:" />
-                </node>
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             </node>
             <node concept="2xdQw9" id="6gjbwaaLzak" role="3cqZAp">
@@ -1429,13 +1432,13 @@
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             <node concept="2xdQw9" id="6gjbwab2isB" role="3cqZAp">
               <node concept="3cpWs3" id="6gjbwab2isC" role="9lYJi">
+                <node concept="Xl_RD" id="6gjbwab2isE" role="3uHU7B">
+                  <property role="Xl_RC" value="Node:" />
+                </node>
                 <node concept="2OqwBi" id="7LJ_vJOlkMp" role="3uHU7w">
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-                <node concept="Xl_RD" id="6gjbwab2isE" role="3uHU7B">
-                  <property role="Xl_RC" value="Node:" />
-                </node>
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             </node>
             <node concept="2xdQw9" id="6gjbwab2isF" role="3cqZAp">
@@ -1688,13 +1691,13 @@
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             <node concept="2xdQw9" id="6gjbwaaGgMR" role="3cqZAp">
               <node concept="3cpWs3" id="6gjbwaaGgMS" role="9lYJi">
+                <node concept="Xl_RD" id="6gjbwaaGgMU" role="3uHU7B">
+                  <property role="Xl_RC" value="Node:" />
+                </node>
                 <node concept="2OqwBi" id="7LJ_vJOlkMN" role="3uHU7w">
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             <node concept="2xdQw9" id="6gjbwaaGgMV" role="3cqZAp">
@@ -1711,13 +1714,13 @@
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             <node concept="2xdQw9" id="6gjbwab2ihL" role="3cqZAp">
               <node concept="3cpWs3" id="6gjbwab2ihM" role="9lYJi">
+                <node concept="Xl_RD" id="6gjbwab2ihO" role="3uHU7B">
+                  <property role="Xl_RC" value="Node:" />
+                </node>
                 <node concept="2OqwBi" id="7LJ_vJOlkN5" role="3uHU7w">
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             <node concept="2xdQw9" id="6gjbwab2ihP" role="3cqZAp">
@@ -1768,13 +1771,13 @@
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               <node concept="3cpWs3" id="6gjbwaaGgJS" role="9lYJi">
+                <node concept="Xl_RD" id="6gjbwaaGgJU" role="3uHU7B">
+                  <property role="Xl_RC" value="Node:" />
+                </node>
                 <node concept="2OqwBi" id="7LJ_vJOlkNv" role="3uHU7w">
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@@ -1791,13 +1794,13 @@
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             <node concept="2xdQw9" id="6gjbwab2hUS" role="3cqZAp">
               <node concept="3cpWs3" id="6gjbwab2hUT" role="9lYJi">
+                <node concept="Xl_RD" id="6gjbwab2hUV" role="3uHU7B">
+                  <property role="Xl_RC" value="Node:" />
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                 <node concept="2OqwBi" id="7LJ_vJOlkNL" role="3uHU7w">
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             <node concept="2xdQw9" id="6gjbwab2hUW" role="3cqZAp">
@@ -1853,13 +1856,13 @@
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               <node concept="3cpWs3" id="6gjbwaaGgLo" role="9lYJi">
+                <node concept="Xl_RD" id="6gjbwaaGgLq" role="3uHU7B">
+                  <property role="Xl_RC" value="Node:" />
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@@ -1876,13 +1879,13 @@
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               <node concept="3cpWs3" id="6gjbwab2i3n" role="9lYJi">
+                <node concept="Xl_RD" id="6gjbwab2i3p" role="3uHU7B">
+                  <property role="Xl_RC" value="Node:" />
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                 <node concept="2OqwBi" id="7LJ_vJOlkOt" role="3uHU7w">
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             <node concept="2xdQw9" id="6gjbwab2i3q" role="3cqZAp">
@@ -1921,13 +1924,13 @@
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               <node concept="3cpWs3" id="6gjbwaaQn9F" role="9lYJi">
+                <node concept="Xl_RD" id="6gjbwaaQn9H" role="3uHU7B">
+                  <property role="Xl_RC" value="Node:" />
+                </node>
                 <node concept="2OqwBi" id="7LJ_vJOlkOR" role="3uHU7w">
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@@ -1952,13 +1955,13 @@
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               <node concept="3cpWs3" id="6gjbwaaGgcS" role="9lYJi">
+                <node concept="Xl_RD" id="6gjbwaaGfUc" role="3uHU7B">
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-                <node concept="Xl_RD" id="6gjbwaaGfUc" role="3uHU7B">
-                  <property role="Xl_RC" value="Node:" />
-                </node>
               </node>
             </node>
             <node concept="2xdQw9" id="6gjbwaaGgiz" role="3cqZAp">
@@ -1975,13 +1978,13 @@
           <node concept="3clFbS" id="6gjbwab0EZF" role="2VODD2">
             <node concept="2xdQw9" id="6gjbwab0FbE" role="3cqZAp">
               <node concept="3cpWs3" id="6gjbwab0FbF" role="9lYJi">
+                <node concept="Xl_RD" id="6gjbwab0FbH" role="3uHU7B">
+                  <property role="Xl_RC" value="Node:" />
+                </node>
                 <node concept="2OqwBi" id="7LJ_vJOlkPr" role="3uHU7w">
                   <node concept="313q4" id="6gjbwab0FbG" role="2Oq$k0" />
                   <node concept="2Iv5rx" id="7LJ_vJOlkPs" role="2OqNvi" />
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-                <node concept="Xl_RD" id="6gjbwab0FbH" role="3uHU7B">
-                  <property role="Xl_RC" value="Node:" />
-                </node>
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             </node>
             <node concept="2xdQw9" id="6gjbwab0FbI" role="3cqZAp">
@@ -2026,6 +2029,181 @@
       <node concept="2iRfu4" id="7uEwlsA7BS9" role="2iSdaV" />
     </node>
   </node>
+  <node concept="24kQdi" id="1045PmWkimx">
+    <property role="3GE5qa" value="grammarWrapTest" />
+    <ref role="1XX52x" to="ibwz:1045PmWki5C" resolve="WrapStmtParentWhitelisting" />
+    <node concept="1WcQYu" id="1045PmWkind" role="2wV5jI">
+      <node concept="2ElW$n" id="1045PmWkine" role="2El2Yn" />
+      <node concept="3EZMnI" id="1045PmWkinf" role="1LiK7o">
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+        <node concept="1kIj98" id="1045PmWkinh" role="3EZMnx">
+          <node concept="3F1sOY" id="1045PmWkini" role="1kIj9b">
+            <ref role="1NtTu8" to="ibwz:1045PmWkiyF" resolve="type" />
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+        </node>
+        <node concept="3F0A7n" id="1045PmWkinj" role="3EZMnx">
+          <ref role="1NtTu8" to="tpck:h0TrG11" resolve="name" />
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+      </node>
+    </node>
+  </node>
+  <node concept="24kQdi" id="6sxj0_UzcGB">
+    <property role="3GE5qa" value="grammarWrapTest" />
+    <ref role="1XX52x" to="ibwz:6sxj0_Uzblc" resolve="StmtContainerAncestorWhitelisting" />
+    <node concept="3EZMnI" id="6sxj0_UzcGD" role="2wV5jI">
+      <node concept="3F0ifn" id="6sxj0_UzcGE" role="3EZMnx">
+        <property role="3F0ifm" value="Stmt Test" />
+      </node>
+      <node concept="2iRkQZ" id="6sxj0_UzcGF" role="2iSdaV" />
+      <node concept="3F2HdR" id="6sxj0_UzcGG" role="3EZMnx">
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+        <node concept="2iRkQZ" id="6sxj0_UzcGH" role="2czzBx" />
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+    </node>
+  </node>
+  <node concept="24kQdi" id="3Lzx5Pf0jxR">
+    <property role="3GE5qa" value="grammarWrapTest" />
+    <ref role="1XX52x" to="ibwz:3Lzx5Pf0jr2" resolve="WrapType" />
+    <node concept="PMmxH" id="3Lzx5Pf0jyX" role="2wV5jI">
+      <ref role="PMmxG" to="tpco:2wZex4PafBj" resolve="alias" />
+    </node>
+  </node>
+  <node concept="24kQdi" id="6sxj0_UzblG">
+    <property role="3GE5qa" value="grammarWrapTest" />
+    <ref role="1XX52x" to="ibwz:6sxj0_Uzbld" resolve="WrapStmtAncestorWhitelisting" />
+    <node concept="1WcQYu" id="6sxj0_UzblM" role="2wV5jI">
+      <node concept="2ElW$n" id="6sxj0_UzblN" role="2El2Yn" />
+      <node concept="3EZMnI" id="6sxj0_UzblO" role="1LiK7o">
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+        <node concept="1kIj98" id="6sxj0_UzblQ" role="3EZMnx">
+          <node concept="3F1sOY" id="6sxj0_UzblR" role="1kIj9b">
+            <ref role="1NtTu8" to="ibwz:6sxj0_Uzblg" resolve="type" />
+          </node>
+        </node>
+        <node concept="3F0A7n" id="6sxj0_UzblS" role="3EZMnx">
+          <ref role="1NtTu8" to="tpck:h0TrG11" resolve="name" />
+        </node>
+      </node>
+    </node>
+  </node>
+  <node concept="24kQdi" id="1$ysu_nN3Fa">
+    <property role="3GE5qa" value="grammarWrapTest" />
+    <ref role="1XX52x" to="ibwz:1$ysu_nN3Eg" resolve="StmtContainerAncestor" />
+    <node concept="3EZMnI" id="1$ysu_nN3Fc" role="2wV5jI">
+      <node concept="3F0ifn" id="1$ysu_nN3Fd" role="3EZMnx">
+        <property role="3F0ifm" value="Stmt Test" />
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+      <node concept="2iRkQZ" id="1$ysu_nN3Fe" role="2iSdaV" />
+      <node concept="3F2HdR" id="1$ysu_nN3Ff" role="3EZMnx">
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+        <node concept="2iRkQZ" id="1$ysu_nN3Fg" role="2czzBx" />
+      </node>
+    </node>
+  </node>
+  <node concept="24kQdi" id="1$ysu_nN4VR">
+    <property role="3GE5qa" value="grammarWrapTest" />
+    <ref role="1XX52x" to="ibwz:1$ysu_nN3Ei" resolve="WrapStmtAncestor" />
+    <node concept="1WcQYu" id="1$ysu_nN4VT" role="2wV5jI">
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+        </node>
+        <node concept="3F0A7n" id="1$ysu_nN4VZ" role="3EZMnx">
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+      </node>
+    </node>
+  </node>
+  <node concept="24kQdi" id="x37qLVSB_Y">
+    <property role="3GE5qa" value="grammarWrapTest" />
+    <ref role="1XX52x" to="ibwz:1045PmWkhcs" resolve="StmtContainerParentWhitelisting" />
+    <node concept="3EZMnI" id="x37qLVSBDi" role="2wV5jI">
+      <node concept="3F0ifn" id="x37qLVSBDj" role="3EZMnx">
+        <property role="3F0ifm" value="Stmt Test" />
+      </node>
+      <node concept="2iRkQZ" id="x37qLVSBDk" role="2iSdaV" />
+      <node concept="3F2HdR" id="x37qLVSBDl" role="3EZMnx">
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+        <node concept="2iRkQZ" id="x37qLVSBDm" role="2czzBx" />
+      </node>
+    </node>
+  </node>
+  <node concept="24kQdi" id="3aFJVZlquy8">
+    <ref role="1XX52x" to="ibwz:3aFJVZlqur9" resolve="TEST_LayoutOfChildInOptional" />
+    <node concept="3EZMnI" id="3aFJVZlquya" role="2wV5jI">
+      <node concept="3F0ifn" id="3aFJVZlquyb" role="3EZMnx">
+        <property role="3F0ifm" value="TEST_LayoutOfChildInOptional" />
+      </node>
+      <node concept="_tjkj" id="3aFJVZlquyd" role="3EZMnx">
+        <node concept="3F1sOY" id="3aFJVZlrXPD" role="_tjki">
+          <ref role="1NtTu8" to="ibwz:3aFJVZlqura" resolve="child" />
+        </node>
+        <node concept="ZYGn8" id="3aFJVZlwP1$" role="ZWbT9">
+          <node concept="3clFbS" id="3aFJVZlwP1_" role="2VODD2">
+            <node concept="3clFbF" id="3aFJVZlwP2g" role="3cqZAp">
+              <node concept="Xl_RD" id="3aFJVZlwP2f" role="3clFbG">
+                <property role="Xl_RC" value="abc" />
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+      <node concept="l2Vlx" id="3aFJVZlquyH" role="2iSdaV" />
+      <node concept="2SqB2G" id="3aFJVZlyh1z" role="2SqHTX">
+        <property role="TrG5h" value="testConceptRoot" />
+      </node>
+    </node>
+  </node>
+  <node concept="24kQdi" id="3Lzx5Pf0ku6">
+    <property role="3GE5qa" value="grammarWrapTest" />
+    <ref role="1XX52x" to="ibwz:3Lzx5Pf0jk5" resolve="WrapStmtParent" />
+    <node concept="1WcQYu" id="3Lzx5Pf0kwM" role="2wV5jI">
+      <node concept="2ElW$n" id="3Lzx5Pf0kwO" role="2El2Yn" />
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+        <node concept="2iRfu4" id="3Lzx5Pf0kwZ" role="2iSdaV" />
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+          <node concept="3F1sOY" id="3Lzx5Pf0k$m" role="1kIj9b">
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+          </node>
+        </node>
+        <node concept="3F0A7n" id="3Lzx5Pf0kB7" role="3EZMnx">
+          <ref role="1NtTu8" to="tpck:h0TrG11" resolve="name" />
+        </node>
+      </node>
+    </node>
+  </node>
+  <node concept="24kQdi" id="67iSu2w55nt">
+    <property role="3GE5qa" value="CapabilitiesDemo" />
+    <ref role="1XX52x" to="ibwz:67iSu2w1UsA" resolve="DemoRoot" />
+    <node concept="3EZMnI" id="67iSu2w55nv" role="2wV5jI">
+      <node concept="3EZMnI" id="67iSu2w55nK" role="3EZMnx">
+        <node concept="Vb9p2" id="67iSu2w55nZ" role="3F10Kt">
+          <property role="Vbekb" value="g1_k_vY/BOLD" />
+        </node>
+        <node concept="2iRfu4" id="67iSu2w55nL" role="2iSdaV" />
+        <node concept="3F0ifn" id="67iSu2w55nD" role="3EZMnx">
+          <property role="3F0ifm" value="Demo: " />
+          <node concept="Vb9p2" id="67iSu2wi3GZ" role="3F10Kt">
+            <property role="Vbekb" value="g1_k_vY/BOLD" />
+          </node>
+        </node>
+        <node concept="3F0A7n" id="67iSu2w55nT" role="3EZMnx">
+          <ref role="1NtTu8" to="tpck:h0TrG11" resolve="name" />
+        </node>
+      </node>
+      <node concept="3F0ifn" id="67iSu2w55o2" role="3EZMnx" />
+      <node concept="3F0ifn" id="67iSu2wi3H2" role="3EZMnx" />
+      <node concept="3F2HdR" id="67iSu2w55oh" role="3EZMnx">
+        <ref role="1NtTu8" to="ibwz:67iSu2w1UsD" resolve="content" />
+        <node concept="2iRkQZ" id="67iSu2w55oj" role="2czzBx" />
+      </node>
+      <node concept="2iRkQZ" id="67iSu2w55ny" role="2iSdaV" />
+    </node>
+  </node>
   <node concept="24kQdi" id="67iSu2vYIfl">
     <property role="3GE5qa" value="CapabilitiesDemo" />
     <ref role="1XX52x" to="ibwz:67iSu2vYIfb" resolve="DemoOptionalCellsCapability" />
@@ -2716,59 +2894,6 @@
       <node concept="1fO$WK" id="67iSu2wG2Tw" role="3F10Kt" />
     </node>
   </node>
-  <node concept="24kQdi" id="67iSu2w55nt">
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-    <ref role="1XX52x" to="ibwz:67iSu2w1UsA" resolve="DemoRoot" />
-    <node concept="3EZMnI" id="67iSu2w55nv" role="2wV5jI">
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-          <node concept="Vb9p2" id="67iSu2wi3GZ" role="3F10Kt">
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@@ -2783,101 +2908,5 @@
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-          </node>
-        </node>
-        <node concept="3F0A7n" id="6sxj0_UzblS" role="3EZMnx">
-          <ref role="1NtTu8" to="tpck:h0TrG11" resolve="name" />
-        </node>
-      </node>
-    </node>
-  </node>
-  <node concept="24kQdi" id="6sxj0_UzcGB">
-    <property role="3GE5qa" value="grammarWrapTest" />
-    <ref role="1XX52x" to="ibwz:6sxj0_Uzblc" resolve="StmtContainerAncestorWhitelisting" />
-    <node concept="3EZMnI" id="6sxj0_UzcGD" role="2wV5jI">
-      <node concept="3F0ifn" id="6sxj0_UzcGE" role="3EZMnx">
-        <property role="3F0ifm" value="Stmt Test" />
-      </node>
-      <node concept="2iRkQZ" id="6sxj0_UzcGF" role="2iSdaV" />
-      <node concept="3F2HdR" id="6sxj0_UzcGG" role="3EZMnx">
-        <ref role="1NtTu8" to="ibwz:6sxj0_UzcGb" resolve="stmts" />
-        <node concept="2iRkQZ" id="6sxj0_UzcGH" role="2czzBx" />
-      </node>
-    </node>
-  </node>
 </model>
 
diff --git a/code/grammarcells/languages/com.mbeddr.mpsutil.grammarcells.sandboxlang/models/com/mbeddr/mpsutil/grammarcells/sandboxlang/structure.mps b/code/grammarcells/languages/com.mbeddr.mpsutil.grammarcells.sandboxlang/models/com/mbeddr/mpsutil/grammarcells/sandboxlang/structure.mps
index c0fa9bbac..7d518a1f5 100644
--- a/code/grammarcells/languages/com.mbeddr.mpsutil.grammarcells.sandboxlang/models/com/mbeddr/mpsutil/grammarcells/sandboxlang/structure.mps
+++ b/code/grammarcells/languages/com.mbeddr.mpsutil.grammarcells.sandboxlang/models/com/mbeddr/mpsutil/grammarcells/sandboxlang/structure.mps
@@ -225,13 +225,6 @@
     <property role="EcuMT" value="7363578995839169026" />
     <property role="R4oN_" value="localVarDecl description" />
     <ref role="1TJDcQ" node="6oKG1kMxn7T" resolve="VariableDeclaration" />
-    <node concept="1TJgyj" id="67iSu2vw5Hp" role="1TKVEi">
-      <property role="IQ2ns" value="7048944721653160793" />
-      <property role="20lmBu" value="fLJjDmT/aggregation" />
-      <property role="20kJfa" value="list" />
-      <property role="20lbJX" value="fLJekj5/_0__n" />
-      <ref role="20lvS9" node="4qdNcH$3auc" resolve="PlusExpression" />
-    </node>
     <node concept="1TJgyi" id="qT5MFml3Gb" role="1TKVEl">
       <property role="TrG5h" value="static" />
       <property role="IQ2nx" value="484443907670948619" />
@@ -240,6 +233,13 @@
     <node concept="PrWs8" id="6oKG1kMxn83" role="PzmwI">
       <ref role="PrY4T" node="1x69AmkdYA2" resolve="IStatement" />
     </node>
+    <node concept="1TJgyj" id="67iSu2vw5Hp" role="1TKVEi">
+      <property role="IQ2ns" value="7048944721653160793" />
+      <property role="20lmBu" value="fLJjDmT/aggregation" />
+      <property role="20kJfa" value="list" />
+      <property role="20lbJX" value="fLJekj5/_0__n" />
+      <ref role="20lvS9" node="4qdNcH$3auc" resolve="PlusExpression" />
+    </node>
     <node concept="1TJgyj" id="67iSu2vs_Uh" role="1TKVEi">
       <property role="IQ2ns" value="7048944721652244113" />
       <property role="20kJfa" value="anyType" />
@@ -874,6 +874,20 @@
       <ref role="20lvS9" node="67iSu2w1UsF" resolve="IDemoContent" />
     </node>
   </node>
+  <node concept="1TIwiD" id="3Lzx5Pf0jeK">
+    <property role="EcuMT" value="4351467201262334896" />
+    <property role="TrG5h" value="StmtContainerParent" />
+    <property role="19KtqR" value="true" />
+    <property role="3GE5qa" value="grammarWrapTest" />
+    <ref role="1TJDcQ" to="tpck:gw2VY9q" />
+    <node concept="1TJgyj" id="3Lzx5Pf0jnO" role="1TKVEi">
+      <property role="IQ2ns" value="4351467201262335476" />
+      <property role="20lmBu" value="fLJjDmT/aggregation" />
+      <property role="20kJfa" value="stmts" />
+      <property role="20lbJX" value="fLJekj5/_0__n" />
+      <ref role="20lvS9" node="3Lzx5Pf0jk5" resolve="WrapStmtParent" />
+    </node>
+  </node>
   <node concept="1TIwiD" id="67iSu2w1UsA">
     <property role="EcuMT" value="7048944721662027558" />
     <property role="3GE5qa" value="CapabilitiesDemo" />
@@ -892,66 +906,23 @@
       <ref role="PrY4T" to="tpck:h0TrEE$" resolve="INamedConcept" />
     </node>
   </node>
-  <node concept="PlHQZ" id="67iSu2w1UsF">
-    <property role="EcuMT" value="7048944721662027563" />
-    <property role="3GE5qa" value="CapabilitiesDemo" />
-    <property role="TrG5h" value="IDemoContent" />
-    <node concept="PrWs8" id="67iSu2w1UsG" role="PrDN$">
-      <ref role="PrY4T" to="tpck:h0TrEE$" resolve="INamedConcept" />
-    </node>
-  </node>
-  <node concept="1TIwiD" id="3Lzx5Pf0jeK">
-    <property role="EcuMT" value="4351467201262334896" />
-    <property role="TrG5h" value="StmtContainerParent" />
-    <property role="19KtqR" value="true" />
-    <property role="3GE5qa" value="grammarWrapTest" />
-    <ref role="1TJDcQ" to="tpck:gw2VY9q" />
-    <node concept="1TJgyj" id="3Lzx5Pf0jnO" role="1TKVEi">
-      <property role="IQ2ns" value="4351467201262335476" />
-      <property role="20lmBu" value="fLJjDmT/aggregation" />
-      <property role="20kJfa" value="stmts" />
-      <property role="20lbJX" value="fLJekj5/_0__n" />
-      <ref role="20lvS9" node="3Lzx5Pf0jk5" resolve="WrapStmtParent" />
-    </node>
-  </node>
-  <node concept="1TIwiD" id="3Lzx5Pf0jk5">
-    <property role="EcuMT" value="4351467201262335237" />
+  <node concept="1TIwiD" id="1$ysu_nN3Ei">
+    <property role="EcuMT" value="1811135247170681490" />
     <property role="3GE5qa" value="grammarWrapTest" />
-    <property role="TrG5h" value="WrapStmtParent" />
+    <property role="TrG5h" value="WrapStmtAncestor" />
     <property role="34LRSv" value="wrapStmt" />
-    <ref role="1TJDcQ" to="tpck:gw2VY9q" />
-    <node concept="1TJgyj" id="3Lzx5Pf0kj2" role="1TKVEi">
-      <property role="IQ2ns" value="4351467201262339266" />
+    <ref role="1TJDcQ" to="tpck:gw2VY9q" resolve="BaseConcept" />
+    <node concept="1TJgyj" id="1$ysu_nN3Ej" role="1TKVEi">
+      <property role="IQ2ns" value="1811135247170681491" />
       <property role="20lmBu" value="fLJjDmT/aggregation" />
       <property role="20kJfa" value="type" />
       <property role="20lbJX" value="fLJekj4/_1" />
       <ref role="20lvS9" node="3Lzx5Pf0jr2" resolve="WrapType" />
     </node>
-    <node concept="PrWs8" id="3Lzx5PffZ$L" role="PzmwI">
+    <node concept="PrWs8" id="1$ysu_nN3Ek" role="PzmwI">
       <ref role="PrY4T" to="tpck:h0TrEE$" resolve="INamedConcept" />
     </node>
   </node>
-  <node concept="1TIwiD" id="3Lzx5Pf0jr2">
-    <property role="EcuMT" value="4351467201262335682" />
-    <property role="3GE5qa" value="grammarWrapTest" />
-    <property role="TrG5h" value="WrapType" />
-    <property role="R5$K7" value="true" />
-    <ref role="1TJDcQ" to="tpck:gw2VY9q" />
-  </node>
-  <node concept="1TIwiD" id="3Lzx5Pf0k2q">
-    <property role="EcuMT" value="4351467201262338202" />
-    <property role="3GE5qa" value="grammarWrapTest" />
-    <property role="TrG5h" value="AType" />
-    <property role="34LRSv" value="A" />
-    <ref role="1TJDcQ" node="3Lzx5Pf0jr2" resolve="WrapType" />
-  </node>
-  <node concept="1TIwiD" id="3Lzx5Pf0k5B">
-    <property role="EcuMT" value="4351467201262338407" />
-    <property role="3GE5qa" value="grammarWrapTest" />
-    <property role="TrG5h" value="BType" />
-    <property role="34LRSv" value="B" />
-    <ref role="1TJDcQ" node="3Lzx5Pf0jr2" resolve="WrapType" />
-  </node>
   <node concept="1TIwiD" id="1$ysu_nN3Eg">
     <property role="EcuMT" value="1811135247170681488" />
     <property role="TrG5h" value="StmtContainerAncestor" />
@@ -966,23 +937,6 @@
       <ref role="20lvS9" node="1$ysu_nN3Ei" resolve="WrapStmtAncestor" />
     </node>
   </node>
-  <node concept="1TIwiD" id="1$ysu_nN3Ei">
-    <property role="EcuMT" value="1811135247170681490" />
-    <property role="3GE5qa" value="grammarWrapTest" />
-    <property role="TrG5h" value="WrapStmtAncestor" />
-    <property role="34LRSv" value="wrapStmt" />
-    <ref role="1TJDcQ" to="tpck:gw2VY9q" resolve="BaseConcept" />
-    <node concept="1TJgyj" id="1$ysu_nN3Ej" role="1TKVEi">
-      <property role="IQ2ns" value="1811135247170681491" />
-      <property role="20lmBu" value="fLJjDmT/aggregation" />
-      <property role="20kJfa" value="type" />
-      <property role="20lbJX" value="fLJekj4/_1" />
-      <ref role="20lvS9" node="3Lzx5Pf0jr2" resolve="WrapType" />
-    </node>
-    <node concept="PrWs8" id="1$ysu_nN3Ek" role="PzmwI">
-      <ref role="PrY4T" to="tpck:h0TrEE$" resolve="INamedConcept" />
-    </node>
-  </node>
   <node concept="1TIwiD" id="1045PmWkhcs">
     <property role="EcuMT" value="1154073061512778524" />
     <property role="3GE5qa" value="grammarWrapTest" />
@@ -997,6 +951,45 @@
       <ref role="20lvS9" node="1045PmWki5C" resolve="WrapStmtParentWhitelisting" />
     </node>
   </node>
+  <node concept="PlHQZ" id="67iSu2w1UsF">
+    <property role="EcuMT" value="7048944721662027563" />
+    <property role="3GE5qa" value="CapabilitiesDemo" />
+    <property role="TrG5h" value="IDemoContent" />
+    <node concept="PrWs8" id="67iSu2w1UsG" role="PrDN$">
+      <ref role="PrY4T" to="tpck:h0TrEE$" resolve="INamedConcept" />
+    </node>
+  </node>
+  <node concept="1TIwiD" id="3Lzx5Pf0k2q">
+    <property role="EcuMT" value="4351467201262338202" />
+    <property role="3GE5qa" value="grammarWrapTest" />
+    <property role="TrG5h" value="AType" />
+    <property role="34LRSv" value="A" />
+    <ref role="1TJDcQ" node="3Lzx5Pf0jr2" resolve="WrapType" />
+  </node>
+  <node concept="1TIwiD" id="3Lzx5Pf0jk5">
+    <property role="EcuMT" value="4351467201262335237" />
+    <property role="3GE5qa" value="grammarWrapTest" />
+    <property role="TrG5h" value="WrapStmtParent" />
+    <property role="34LRSv" value="wrapStmt" />
+    <ref role="1TJDcQ" to="tpck:gw2VY9q" />
+    <node concept="1TJgyj" id="3Lzx5Pf0kj2" role="1TKVEi">
+      <property role="IQ2ns" value="4351467201262339266" />
+      <property role="20lmBu" value="fLJjDmT/aggregation" />
+      <property role="20kJfa" value="type" />
+      <property role="20lbJX" value="fLJekj4/_1" />
+      <ref role="20lvS9" node="3Lzx5Pf0jr2" resolve="WrapType" />
+    </node>
+    <node concept="PrWs8" id="3Lzx5PffZ$L" role="PzmwI">
+      <ref role="PrY4T" to="tpck:h0TrEE$" resolve="INamedConcept" />
+    </node>
+  </node>
+  <node concept="1TIwiD" id="3Lzx5Pf0k5B">
+    <property role="EcuMT" value="4351467201262338407" />
+    <property role="3GE5qa" value="grammarWrapTest" />
+    <property role="TrG5h" value="BType" />
+    <property role="34LRSv" value="B" />
+    <ref role="1TJDcQ" node="3Lzx5Pf0jr2" resolve="WrapType" />
+  </node>
   <node concept="1TIwiD" id="1045PmWki5C">
     <property role="EcuMT" value="1154073061512782184" />
     <property role="3GE5qa" value="grammarWrapTest" />
@@ -1045,5 +1038,26 @@
       <ref role="20lvS9" node="3Lzx5Pf0jr2" resolve="WrapType" />
     </node>
   </node>
+  <node concept="1TIwiD" id="3Lzx5Pf0jr2">
+    <property role="EcuMT" value="4351467201262335682" />
+    <property role="3GE5qa" value="grammarWrapTest" />
+    <property role="TrG5h" value="WrapType" />
+    <property role="R5$K7" value="true" />
+    <ref role="1TJDcQ" to="tpck:gw2VY9q" />
+  </node>
+  <node concept="1TIwiD" id="3aFJVZlqur9">
+    <property role="EcuMT" value="3651222753554065097" />
+    <property role="TrG5h" value="TEST_LayoutOfChildInOptional" />
+    <ref role="1TJDcQ" to="tpck:gw2VY9q" resolve="BaseConcept" />
+    <node concept="1TJgyj" id="3aFJVZlqura" role="1TKVEi">
+      <property role="IQ2ns" value="3651222753554065098" />
+      <property role="20lmBu" value="fLJjDmT/aggregation" />
+      <property role="20kJfa" value="child" />
+      <ref role="20lvS9" node="6oKG1kMxn8A" resolve="IExpression" />
+    </node>
+    <node concept="PrWs8" id="3aFJVZlqurb" role="PzmwI">
+      <ref role="PrY4T" node="1x69AmkdYA2" resolve="IStatement" />
+    </node>
+  </node>
 </model>
 
diff --git a/code/grammarcells/languages/com.mbeddr.mpsutil.grammarcells/generator/template/main@generator.mps b/code/grammarcells/languages/com.mbeddr.mpsutil.grammarcells/generator/template/main@generator.mps
index 4e2880fa5..4089de24b 100755
--- a/code/grammarcells/languages/com.mbeddr.mpsutil.grammarcells/generator/template/main@generator.mps
+++ b/code/grammarcells/languages/com.mbeddr.mpsutil.grammarcells/generator/template/main@generator.mps
@@ -19336,49 +19336,355 @@
               </node>
             </node>
           </node>
-          <node concept="3clFbF" id="4qdNcHzYzb4" role="3cqZAp">
-            <node concept="22lmx$" id="5ycts4Sf7oV" role="3clFbG">
-              <node concept="22lmx$" id="3KoBPk189JJ" role="3uHU7B">
-                <node concept="22lmx$" id="7KznU_3Xr_S" role="3uHU7B">
-                  <node concept="2OqwBi" id="4qdNcHzYJWi" role="3uHU7B">
-                    <node concept="37vLTw" id="4qdNcHzYKF4" role="2Oq$k0">
-                      <ref role="3cqZAo" node="4qdNcHzYKEB" resolve="firstNonConst" />
-                    </node>
-                    <node concept="1mIQ4w" id="4qdNcHzYKhe" role="2OqNvi">
-                      <node concept="chp4Y" id="4qdNcHzYKpU" role="cj9EA">
-                        <ref role="cht4Q" to="tpc2:fBF1sR7" resolve="CellModel_RefNode" />
-                      </node>
-                    </node>
+          <node concept="3clFbH" id="3aFJVZliT6G" role="3cqZAp" />
+          <node concept="3cpWs8" id="3aFJVZliTPP" role="3cqZAp">
+            <node concept="3cpWsn" id="3aFJVZliTPQ" role="3cpWs9">
+              <property role="TrG5h" value="willGenerateAlternation" />
+              <node concept="10P_77" id="3aFJVZliTPR" role="1tU5fm" />
+              <node concept="1Wc70l" id="3aFJVZliTPS" role="33vP2m">
+                <node concept="2OqwBi" id="3aFJVZliTPT" role="3uHU7w">
+                  <node concept="37vLTw" id="3aFJVZliUrl" role="2Oq$k0">
+                    <ref role="3cqZAo" node="4qdNcHzYKEB" resolve="firstNonConst" />
                   </node>
-                  <node concept="2OqwBi" id="7KznU_3XrRG" role="3uHU7w">
-                    <node concept="37vLTw" id="7KznU_3XrGl" role="2Oq$k0">
-                      <ref role="3cqZAo" node="4qdNcHzYKEB" resolve="firstNonConst" />
-                    </node>
-                    <node concept="1mIQ4w" id="7KznU_3XsaD" role="2OqNvi">
-                      <node concept="chp4Y" id="7KznU_3Xskp" role="cj9EA">
-                        <ref role="cht4Q" to="tpc2:fBF2Hee" resolve="CellModel_RefNodeList" />
-                      </node>
+                  <node concept="1mIQ4w" id="3aFJVZliTPX" role="2OqNvi">
+                    <node concept="chp4Y" id="3aFJVZliTPY" role="cj9EA">
+                      <ref role="cht4Q" to="tpc2:fBF1sR7" resolve="CellModel_RefNode" />
                     </node>
                   </node>
                 </node>
-                <node concept="2OqwBi" id="3KoBPk18a3J" role="3uHU7w">
-                  <node concept="37vLTw" id="3KoBPk189SX" role="2Oq$k0">
-                    <ref role="3cqZAo" node="4qdNcHzYKEB" resolve="firstNonConst" />
-                  </node>
-                  <node concept="1mIQ4w" id="3KoBPk18alZ" role="2OqNvi">
-                    <node concept="chp4Y" id="3KoBPk18av8" role="cj9EA">
-                      <ref role="cht4Q" to="tpc2:fBF0A4I" resolve="CellModel_Property" />
+                <node concept="2OqwBi" id="3aFJVZliTPZ" role="3uHU7B">
+                  <node concept="2OqwBi" id="3aFJVZliTQ0" role="2Oq$k0">
+                    <node concept="30H73N" id="3aFJVZliTQ1" role="2Oq$k0" />
+                    <node concept="2qgKlT" id="3aFJVZliTQ2" role="2OqNvi">
+                      <ref role="37wK5l" to="karh:7KznU_45kn7" resolve="getTransformationText" />
                     </node>
                   </node>
+                  <node concept="3x8VRR" id="3aFJVZliTQ3" role="2OqNvi" />
                 </node>
               </node>
-              <node concept="2OqwBi" id="5ycts4Sf7Y0" role="3uHU7w">
-                <node concept="37vLTw" id="5ycts4Sf7Y1" role="2Oq$k0">
-                  <ref role="3cqZAo" node="4qdNcHzYKEB" resolve="firstNonConst" />
+            </node>
+          </node>
+          <node concept="3clFbH" id="3aFJVZliTa1" role="3cqZAp" />
+          <node concept="3SKdUt" id="3aFJVZliYQp" role="3cqZAp">
+            <node concept="1PaTwC" id="3aFJVZliYQq" role="1aUNEU">
+              <node concept="3oM_SD" id="3aFJVZliYQr" role="1PaTwD">
+                <property role="3oM_SC" value="There" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQs" role="1PaTwD">
+                <property role="3oM_SC" value="is" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQt" role="1PaTwD">
+                <property role="3oM_SC" value="a" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQu" role="1PaTwD">
+                <property role="3oM_SC" value="rule" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQv" role="1PaTwD">
+                <property role="3oM_SC" value="in" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQw" role="1PaTwD">
+                <property role="3oM_SC" value="MPS" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQx" role="1PaTwD">
+                <property role="3oM_SC" value="that" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQy" role="1PaTwD">
+                <property role="3oM_SC" value="generates" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQz" role="1PaTwD">
+                <property role="3oM_SC" value="an" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQ$" role="1PaTwD">
+                <property role="3oM_SC" value="additional" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQ_" role="1PaTwD">
+                <property role="3oM_SC" value="collection" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQA" role="1PaTwD">
+                <property role="3oM_SC" value="cell" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQB" role="1PaTwD">
+                <property role="3oM_SC" value="around" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQC" role="1PaTwD">
+                <property role="3oM_SC" value="cells" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQD" role="1PaTwD">
+                <property role="3oM_SC" value="in" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQE" role="1PaTwD">
+                <property role="3oM_SC" value="an" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQF" role="1PaTwD">
+                <property role="3oM_SC" value="alternation" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQG" role="1PaTwD">
+                <property role="3oM_SC" value="that" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQH" role="1PaTwD">
+                <property role="3oM_SC" value="have" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQI" role="1PaTwD">
+                <property role="3oM_SC" value="a" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQJ" role="1PaTwD">
+                <property role="3oM_SC" value="rendering" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQK" role="1PaTwD">
+                <property role="3oM_SC" value="condition" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQL" role="1PaTwD">
+                <property role="3oM_SC" value="(because" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQM" role="1PaTwD">
+                <property role="3oM_SC" value="rendering" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQN" role="1PaTwD">
+                <property role="3oM_SC" value="conditions" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQO" role="1PaTwD">
+                <property role="3oM_SC" value="are" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQP" role="1PaTwD">
+                <property role="3oM_SC" value="evaluated" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQQ" role="1PaTwD">
+                <property role="3oM_SC" value="by" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQR" role="1PaTwD">
+                <property role="3oM_SC" value="their" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQS" role="1PaTwD">
+                <property role="3oM_SC" value="parent" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQT" role="1PaTwD">
+                <property role="3oM_SC" value="collection)." />
+              </node>
+            </node>
+          </node>
+          <node concept="3SKdUt" id="3aFJVZliYQU" role="3cqZAp">
+            <node concept="1PaTwC" id="3aFJVZliYQV" role="1aUNEU">
+              <node concept="3oM_SD" id="3aFJVZliYQW" role="1PaTwD">
+                <property role="3oM_SC" value="In" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQX" role="1PaTwD">
+                <property role="3oM_SC" value="some" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQY" role="1PaTwD">
+                <property role="3oM_SC" value="case" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYQZ" role="1PaTwD">
+                <property role="3oM_SC" value="we" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYR0" role="1PaTwD">
+                <property role="3oM_SC" value="generate" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYR1" role="1PaTwD">
+                <property role="3oM_SC" value="an" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYR2" role="1PaTwD">
+                <property role="3oM_SC" value="alternation" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYR3" role="1PaTwD">
+                <property role="3oM_SC" value="for" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYR4" role="1PaTwD">
+                <property role="3oM_SC" value="an" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYR5" role="1PaTwD">
+                <property role="3oM_SC" value="optional" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYR6" role="1PaTwD">
+                <property role="3oM_SC" value="cell" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYR7" role="1PaTwD">
+                <property role="3oM_SC" value="that" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYR8" role="1PaTwD">
+                <property role="3oM_SC" value="has" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYR9" role="1PaTwD">
+                <property role="3oM_SC" value="the" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRa" role="1PaTwD">
+                <property role="3oM_SC" value="same" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRb" role="1PaTwD">
+                <property role="3oM_SC" value="condition" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRc" role="1PaTwD">
+                <property role="3oM_SC" value="and" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRd" role="1PaTwD">
+                <property role="3oM_SC" value="then" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRe" role="1PaTwD">
+                <property role="3oM_SC" value="we" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRf" role="1PaTwD">
+                <property role="3oM_SC" value="don't" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRg" role="1PaTwD">
+                <property role="3oM_SC" value="need" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRh" role="1PaTwD">
+                <property role="3oM_SC" value="the" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRi" role="1PaTwD">
+                <property role="3oM_SC" value="rendering" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRj" role="1PaTwD">
+                <property role="3oM_SC" value="condition." />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRk" role="1PaTwD">
+                <property role="3oM_SC" value="Not" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRl" role="1PaTwD">
+                <property role="3oM_SC" value="generating" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRm" role="1PaTwD">
+                <property role="3oM_SC" value="the" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRn" role="1PaTwD">
+                <property role="3oM_SC" value="condition" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRo" role="1PaTwD">
+                <property role="3oM_SC" value="avoids" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRp" role="1PaTwD">
+                <property role="3oM_SC" value="this" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRq" role="1PaTwD">
+                <property role="3oM_SC" value="additional" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRr" role="1PaTwD">
+                <property role="3oM_SC" value="wrapper" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRs" role="1PaTwD">
+                <property role="3oM_SC" value="collection" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRt" role="1PaTwD">
+                <property role="3oM_SC" value="from" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRu" role="1PaTwD">
+                <property role="3oM_SC" value="being" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRv" role="1PaTwD">
+                <property role="3oM_SC" value="generated." />
+              </node>
+            </node>
+          </node>
+          <node concept="3SKdUt" id="3aFJVZliYRw" role="3cqZAp">
+            <node concept="1PaTwC" id="3aFJVZliYRx" role="1aUNEU">
+              <node concept="3oM_SD" id="3aFJVZliYRy" role="1PaTwD">
+                <property role="3oM_SC" value="This" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRz" role="1PaTwD">
+                <property role="3oM_SC" value="unwanted" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYR$" role="1PaTwD">
+                <property role="3oM_SC" value="wrapper" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYR_" role="1PaTwD">
+                <property role="3oM_SC" value="collection" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRA" role="1PaTwD">
+                <property role="3oM_SC" value="has" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRB" role="1PaTwD">
+                <property role="3oM_SC" value="a" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRC" role="1PaTwD">
+                <property role="3oM_SC" value="horizontal" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRD" role="1PaTwD">
+                <property role="3oM_SC" value="layout" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRE" role="1PaTwD">
+                <property role="3oM_SC" value="which" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRF" role="1PaTwD">
+                <property role="3oM_SC" value="breaks" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRG" role="1PaTwD">
+                <property role="3oM_SC" value="the" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRH" role="1PaTwD">
+                <property role="3oM_SC" value="layout" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRI" role="1PaTwD">
+                <property role="3oM_SC" value="in" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRJ" role="1PaTwD">
+                <property role="3oM_SC" value="case" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRK" role="1PaTwD">
+                <property role="3oM_SC" value="indent" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRL" role="1PaTwD">
+                <property role="3oM_SC" value="layouts" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRM" role="1PaTwD">
+                <property role="3oM_SC" value="are" />
+              </node>
+              <node concept="3oM_SD" id="3aFJVZliYRN" role="1PaTwD">
+                <property role="3oM_SC" value="used." />
+              </node>
+            </node>
+          </node>
+          <node concept="3clFbH" id="3aFJVZliTaE" role="3cqZAp" />
+          <node concept="3clFbF" id="4qdNcHzYzb4" role="3cqZAp">
+            <node concept="1Wc70l" id="3aFJVZliXdS" role="3clFbG">
+              <node concept="3fqX7Q" id="3aFJVZliXXi" role="3uHU7w">
+                <node concept="37vLTw" id="3aFJVZliY19" role="3fr31v">
+                  <ref role="3cqZAo" node="3aFJVZliTPQ" resolve="willGenerateAlternation" />
                 </node>
-                <node concept="1mIQ4w" id="5ycts4Sf7Y2" role="2OqNvi">
-                  <node concept="chp4Y" id="5ycts4Sf8E3" role="cj9EA">
-                    <ref role="cht4Q" to="tpc2:fPiCG$y" resolve="CellModel_RefCell" />
+              </node>
+              <node concept="1eOMI4" id="3aFJVZliW5C" role="3uHU7B">
+                <node concept="22lmx$" id="5ycts4Sf7oV" role="1eOMHV">
+                  <node concept="22lmx$" id="3KoBPk189JJ" role="3uHU7B">
+                    <node concept="22lmx$" id="7KznU_3Xr_S" role="3uHU7B">
+                      <node concept="2OqwBi" id="4qdNcHzYJWi" role="3uHU7B">
+                        <node concept="37vLTw" id="4qdNcHzYKF4" role="2Oq$k0">
+                          <ref role="3cqZAo" node="4qdNcHzYKEB" resolve="firstNonConst" />
+                        </node>
+                        <node concept="1mIQ4w" id="4qdNcHzYKhe" role="2OqNvi">
+                          <node concept="chp4Y" id="4qdNcHzYKpU" role="cj9EA">
+                            <ref role="cht4Q" to="tpc2:fBF1sR7" resolve="CellModel_RefNode" />
+                          </node>
+                        </node>
+                      </node>
+                      <node concept="2OqwBi" id="7KznU_3XrRG" role="3uHU7w">
+                        <node concept="37vLTw" id="7KznU_3XrGl" role="2Oq$k0">
+                          <ref role="3cqZAo" node="4qdNcHzYKEB" resolve="firstNonConst" />
+                        </node>
+                        <node concept="1mIQ4w" id="7KznU_3XsaD" role="2OqNvi">
+                          <node concept="chp4Y" id="7KznU_3Xskp" role="cj9EA">
+                            <ref role="cht4Q" to="tpc2:fBF2Hee" resolve="CellModel_RefNodeList" />
+                          </node>
+                        </node>
+                      </node>
+                    </node>
+                    <node concept="2OqwBi" id="3KoBPk18a3J" role="3uHU7w">
+                      <node concept="37vLTw" id="3KoBPk189SX" role="2Oq$k0">
+                        <ref role="3cqZAo" node="4qdNcHzYKEB" resolve="firstNonConst" />
+                      </node>
+                      <node concept="1mIQ4w" id="3KoBPk18alZ" role="2OqNvi">
+                        <node concept="chp4Y" id="3KoBPk18av8" role="cj9EA">
+                          <ref role="cht4Q" to="tpc2:fBF0A4I" resolve="CellModel_Property" />
+                        </node>
+                      </node>
+                    </node>
+                  </node>
+                  <node concept="2OqwBi" id="5ycts4Sf7Y0" role="3uHU7w">
+                    <node concept="37vLTw" id="5ycts4Sf7Y1" role="2Oq$k0">
+                      <ref role="3cqZAo" node="4qdNcHzYKEB" resolve="firstNonConst" />
+                    </node>
+                    <node concept="1mIQ4w" id="5ycts4Sf7Y2" role="2OqNvi">
+                      <node concept="chp4Y" id="5ycts4Sf8E3" role="cj9EA">
+                        <ref role="cht4Q" to="tpc2:fPiCG$y" resolve="CellModel_RefCell" />
+                      </node>
+                    </node>
                   </node>
                 </node>
               </node>
diff --git a/code/grammarcells/solutions/com.mbeddr.mpsutil.grammarcells.tests/com.mbeddr.mpsutil.grammarcells.tests.msd b/code/grammarcells/solutions/com.mbeddr.mpsutil.grammarcells.tests/com.mbeddr.mpsutil.grammarcells.tests.msd
index 32656431c..f0da91801 100644
--- a/code/grammarcells/solutions/com.mbeddr.mpsutil.grammarcells.tests/com.mbeddr.mpsutil.grammarcells.tests.msd
+++ b/code/grammarcells/solutions/com.mbeddr.mpsutil.grammarcells.tests/com.mbeddr.mpsutil.grammarcells.tests.msd
@@ -17,6 +17,7 @@
     <dependency reexport="false">1ed103c3-3aa6-49b7-9c21-6765ee11f224(MPS.Editor)</dependency>
     <dependency reexport="false">6354ebe7-c22a-4a0f-ac54-50b52ab9b065(JDK)</dependency>
     <dependency reexport="false">a257f68c-93a3-47b0-838b-6905dd9c20f6(com.mbeddr.mpsutil.grammarcells.sandboxlang)</dependency>
+    <dependency reexport="false">8865b7a8-5271-43d3-884c-6fd1d9cfdd34(MPS.OpenAPI)</dependency>
   </dependencies>
   <languageVersions>
     <language slang="l:b4f35ed8-45af-4efa-abe4-00ac26956e69:com.mbeddr.mpsutil.grammarcells.runtimelang" version="0" />
diff --git a/code/grammarcells/solutions/com.mbeddr.mpsutil.grammarcells.tests/models/com/mbeddr/mpsutil/grammarcells/tests@tests.mps b/code/grammarcells/solutions/com.mbeddr.mpsutil.grammarcells.tests/models/com/mbeddr/mpsutil/grammarcells/tests@tests.mps
index ae06fc66f..7631a3760 100644
--- a/code/grammarcells/solutions/com.mbeddr.mpsutil.grammarcells.tests/models/com/mbeddr/mpsutil/grammarcells/tests@tests.mps
+++ b/code/grammarcells/solutions/com.mbeddr.mpsutil.grammarcells.tests/models/com/mbeddr/mpsutil/grammarcells/tests@tests.mps
@@ -9,8 +9,8 @@
     <use id="f3061a53-9226-4cc5-a443-f952ceaf5816" name="jetbrains.mps.baseLanguage" version="12" />
     <use id="fd392034-7849-419d-9071-12563d152375" name="jetbrains.mps.baseLanguage.closures" version="0" />
     <use id="b4f35ed8-45af-4efa-abe4-00ac26956e69" name="com.mbeddr.mpsutil.grammarcells.runtimelang" version="0" />
-    <use id="83888646-71ce-4f1c-9c53-c54016f6ad4f" name="jetbrains.mps.baseLanguage.collections" version="1" />
     <use id="7866978e-a0f0-4cc7-81bc-4d213d9375e1" name="jetbrains.mps.lang.smodel" version="19" />
+    <use id="83888646-71ce-4f1c-9c53-c54016f6ad4f" name="jetbrains.mps.baseLanguage.collections" version="1" />
   </languages>
   <imports>
     <import index="ekwn" ref="r:9832fb5f-2578-4b58-8014-a5de79da988e(jetbrains.mps.ide.editor.actions)" />
@@ -21,9 +21,10 @@
     <import index="lwvz" ref="1ed103c3-3aa6-49b7-9c21-6765ee11f224/java:jetbrains.mps.openapi.editor.selection(MPS.Editor/)" />
     <import index="22ra" ref="1ed103c3-3aa6-49b7-9c21-6765ee11f224/java:jetbrains.mps.openapi.editor.update(MPS.Editor/)" />
     <import index="bd8o" ref="498d89d2-c2e9-11e2-ad49-6cf049e62fe5/java:com.intellij.openapi.application(MPS.IDEA/)" />
-    <import index="33ny" ref="6354ebe7-c22a-4a0f-ac54-50b52ab9b065/java:java.util(JDK/)" />
     <import index="ibwz" ref="r:ad27d4b4-fc2c-4b6d-9e22-455eb0ccf354(com.mbeddr.mpsutil.grammarcells.sandboxlang.structure)" />
-    <import index="c17a" ref="8865b7a8-5271-43d3-884c-6fd1d9cfdd34/java:org.jetbrains.mps.openapi.language(MPS.OpenAPI/)" implicit="true" />
+    <import index="33ny" ref="6354ebe7-c22a-4a0f-ac54-50b52ab9b065/java:java.util(JDK/)" />
+    <import index="c17a" ref="8865b7a8-5271-43d3-884c-6fd1d9cfdd34/java:org.jetbrains.mps.openapi.language(MPS.OpenAPI/)" />
+    <import index="mhbf" ref="8865b7a8-5271-43d3-884c-6fd1d9cfdd34/java:org.jetbrains.mps.openapi.model(MPS.OpenAPI/)" />
   </imports>
   <registry>
     <language id="8585453e-6bfb-4d80-98de-b16074f1d86c" name="jetbrains.mps.lang.test">
@@ -277,6 +278,9 @@
       <concept id="6380604244808845044" name="com.mbeddr.mpsutil.grammarcells.sandboxlang.structure.TEST_OptionalWithoutText_Reference" flags="ng" index="1wCzcP">
         <reference id="6380604244808845047" name="refTarget" index="1wCzcQ" />
       </concept>
+      <concept id="3651222753554065097" name="com.mbeddr.mpsutil.grammarcells.sandboxlang.structure.TEST_LayoutOfChildInOptional" flags="ng" index="3BK__Q">
+        <child id="3651222753554065098" name="child" index="3BK__P" />
+      </concept>
       <concept id="6380604244804284912" name="com.mbeddr.mpsutil.grammarcells.sandboxlang.structure.TEST_OptionalWithoutText_Single" flags="ng" index="1JpcgL">
         <child id="6380604244804360648" name="child" index="1JpqK9" />
       </concept>
@@ -3013,6 +3017,217 @@
       </node>
     </node>
   </node>
+  <node concept="LiM7Y" id="6sxj0_UzcRB">
+    <property role="TrG5h" value="GrammarWrapFilterConstraintsAncestorWhitelisting" />
+    <node concept="1qefOq" id="6sxj0_UzcSg" role="25YQCW">
+      <node concept="tFv_5" id="6sxj0_UAAEu" role="1qenE9">
+        <node concept="LIFWc" id="6sxj0_UAAEG" role="lGtFl">
+          <property role="ZRATv" value="true" />
+          <property role="OXtK3" value="true" />
+          <property role="p6zMq" value="0" />
+          <property role="p6zMs" value="0" />
+          <property role="LIFWd" value="empty_stmts" />
+        </node>
+      </node>
+    </node>
+    <node concept="3clFbS" id="6sxj0_UABs0" role="LjaKd">
+      <node concept="3cpWs8" id="6sxj0_UABsa" role="3cqZAp">
+        <node concept="3cpWsn" id="6sxj0_UABsb" role="3cpWs9">
+          <property role="TrG5h" value="si" />
+          <node concept="3uibUv" id="6sxj0_UABsc" role="1tU5fm">
+            <ref role="3uigEE" to="f4zo:~SubstituteInfo" resolve="SubstituteInfo" />
+          </node>
+          <node concept="2OqwBi" id="6sxj0_UABsd" role="33vP2m">
+            <node concept="2OqwBi" id="6sxj0_UABse" role="2Oq$k0">
+              <node concept="369mXd" id="6sxj0_UABsf" role="2Oq$k0" />
+              <node concept="liA8E" id="6sxj0_UABsg" role="2OqNvi">
+                <ref role="37wK5l" to="exr9:~EditorComponent.getSelectedCell()" resolve="getSelectedCell" />
+              </node>
+            </node>
+            <node concept="liA8E" id="6sxj0_UABsh" role="2OqNvi">
+              <ref role="37wK5l" to="f4zo:~EditorCell.getSubstituteInfo()" resolve="getSubstituteInfo" />
+            </node>
+          </node>
+        </node>
+      </node>
+      <node concept="3cpWs8" id="6sxj0_UABsi" role="3cqZAp">
+        <node concept="3cpWsn" id="6sxj0_UABsj" role="3cpWs9">
+          <property role="TrG5h" value="actions" />
+          <node concept="_YKpA" id="6sxj0_UABsk" role="1tU5fm">
+            <node concept="3uibUv" id="6sxj0_UABsl" role="_ZDj9">
+              <ref role="3uigEE" to="f4zo:~SubstituteAction" resolve="SubstituteAction" />
+            </node>
+          </node>
+          <node concept="2OqwBi" id="6sxj0_UABsm" role="33vP2m">
+            <node concept="37vLTw" id="6sxj0_UABsn" role="2Oq$k0">
+              <ref role="3cqZAo" node="6sxj0_UABsb" resolve="si" />
+            </node>
+            <node concept="liA8E" id="6sxj0_UABso" role="2OqNvi">
+              <ref role="37wK5l" to="f4zo:~SubstituteInfo.getMatchingActions(java.lang.String,boolean)" resolve="getMatchingActions" />
+              <node concept="Xl_RD" id="6sxj0_UABsp" role="37wK5m">
+                <property role="Xl_RC" value="" />
+              </node>
+              <node concept="3clFbT" id="6sxj0_UABsq" role="37wK5m" />
+            </node>
+          </node>
+        </node>
+      </node>
+      <node concept="1gVbGN" id="6sxj0_UABsr" role="3cqZAp">
+        <node concept="3clFbC" id="6sxj0_UABss" role="1gVkn0">
+          <node concept="3cmrfG" id="6sxj0_UABst" role="3uHU7w">
+            <property role="3cmrfH" value="2" />
+          </node>
+          <node concept="2OqwBi" id="6sxj0_UABsu" role="3uHU7B">
+            <node concept="37vLTw" id="6sxj0_UABsv" role="2Oq$k0">
+              <ref role="3cqZAo" node="6sxj0_UABsj" resolve="actions" />
+            </node>
+            <node concept="34oBXx" id="6sxj0_UABsw" role="2OqNvi" />
+          </node>
+        </node>
+        <node concept="Xl_RD" id="6sxj0_UABsx" role="1gVpfI">
+          <property role="Xl_RC" value="Maximum of 2 actions, Type A and WrapStmt expected" />
+        </node>
+      </node>
+      <node concept="1gVbGN" id="6sxj0_UABsy" role="3cqZAp">
+        <node concept="3fqX7Q" id="6sxj0_UABsz" role="1gVkn0">
+          <node concept="2OqwBi" id="6sxj0_UABs$" role="3fr31v">
+            <node concept="37vLTw" id="6sxj0_UABs_" role="2Oq$k0">
+              <ref role="3cqZAo" node="6sxj0_UABsj" resolve="actions" />
+            </node>
+            <node concept="2HwmR7" id="6sxj0_UABsA" role="2OqNvi">
+              <node concept="1bVj0M" id="6sxj0_UABsB" role="23t8la">
+                <node concept="3clFbS" id="6sxj0_UABsC" role="1bW5cS">
+                  <node concept="3clFbF" id="6sxj0_UABsD" role="3cqZAp">
+                    <node concept="2OqwBi" id="6sxj0_UABsE" role="3clFbG">
+                      <node concept="2OqwBi" id="6sxj0_UABsF" role="2Oq$k0">
+                        <node concept="37vLTw" id="6sxj0_UABsG" role="2Oq$k0">
+                          <ref role="3cqZAo" node="6sxj0_UABsN" resolve="it" />
+                        </node>
+                        <node concept="liA8E" id="6sxj0_UABsH" role="2OqNvi">
+                          <ref role="37wK5l" to="f4zo:~SubstituteAction.getMatchingText(java.lang.String)" resolve="getMatchingText" />
+                          <node concept="Xl_RD" id="6sxj0_UABsI" role="37wK5m">
+                            <property role="Xl_RC" value="" />
+                          </node>
+                        </node>
+                      </node>
+                      <node concept="liA8E" id="6sxj0_UABsJ" role="2OqNvi">
+                        <ref role="37wK5l" to="wyt6:~String.equals(java.lang.Object)" resolve="equals" />
+                        <node concept="2OqwBi" id="6sxj0_UABsK" role="37wK5m">
+                          <node concept="35c_gC" id="6sxj0_UABsL" role="2Oq$k0">
+                            <ref role="35c_gD" to="ibwz:3Lzx5Pf0k2q" resolve="AType" />
+                          </node>
+                          <node concept="liA8E" id="6sxj0_UABsM" role="2OqNvi">
+                            <ref role="37wK5l" to="c17a:~SAbstractConcept.getConceptAlias()" resolve="getConceptAlias" />
+                          </node>
+                        </node>
+                      </node>
+                    </node>
+                  </node>
+                </node>
+                <node concept="Rh6nW" id="6sxj0_UABsN" role="1bW2Oz">
+                  <property role="TrG5h" value="it" />
+                  <node concept="2jxLKc" id="6sxj0_UABsO" role="1tU5fm" />
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="Xl_RD" id="6sxj0_UABsP" role="1gVpfI">
+          <property role="Xl_RC" value="Type A not excluded from autocomplete menu" />
+        </node>
+      </node>
+      <node concept="1gVbGN" id="6sxj0_UABsQ" role="3cqZAp">
+        <node concept="2OqwBi" id="6sxj0_UABsR" role="1gVkn0">
+          <node concept="37vLTw" id="6sxj0_UABsS" role="2Oq$k0">
+            <ref role="3cqZAo" node="6sxj0_UABsj" resolve="actions" />
+          </node>
+          <node concept="2HwmR7" id="6sxj0_UABsT" role="2OqNvi">
+            <node concept="1bVj0M" id="6sxj0_UABsU" role="23t8la">
+              <node concept="3clFbS" id="6sxj0_UABsV" role="1bW5cS">
+                <node concept="3clFbF" id="6sxj0_UABsW" role="3cqZAp">
+                  <node concept="2OqwBi" id="6sxj0_UABsX" role="3clFbG">
+                    <node concept="2OqwBi" id="6sxj0_UABsY" role="2Oq$k0">
+                      <node concept="37vLTw" id="6sxj0_UABsZ" role="2Oq$k0">
+                        <ref role="3cqZAo" node="6sxj0_UABt6" resolve="it" />
+                      </node>
+                      <node concept="liA8E" id="6sxj0_UABt0" role="2OqNvi">
+                        <ref role="37wK5l" to="f4zo:~SubstituteAction.getMatchingText(java.lang.String)" resolve="getMatchingText" />
+                        <node concept="Xl_RD" id="6sxj0_UABt1" role="37wK5m" />
+                      </node>
+                    </node>
+                    <node concept="liA8E" id="6sxj0_UABt2" role="2OqNvi">
+                      <ref role="37wK5l" to="wyt6:~String.equals(java.lang.Object)" resolve="equals" />
+                      <node concept="2OqwBi" id="6sxj0_UABt3" role="37wK5m">
+                        <node concept="35c_gC" id="6sxj0_UABt4" role="2Oq$k0">
+                          <ref role="35c_gD" to="ibwz:3Lzx5Pf0k5B" resolve="BType" />
+                        </node>
+                        <node concept="liA8E" id="6sxj0_UABt5" role="2OqNvi">
+                          <ref role="37wK5l" to="c17a:~SAbstractConcept.getConceptAlias()" resolve="getConceptAlias" />
+                        </node>
+                      </node>
+                    </node>
+                  </node>
+                </node>
+              </node>
+              <node concept="Rh6nW" id="6sxj0_UABt6" role="1bW2Oz">
+                <property role="TrG5h" value="it" />
+                <node concept="2jxLKc" id="6sxj0_UABt7" role="1tU5fm" />
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="Xl_RD" id="6sxj0_UABt8" role="1gVpfI">
+          <property role="Xl_RC" value="Type B not included in autocomplete menu" />
+        </node>
+      </node>
+      <node concept="1gVbGN" id="6sxj0_UABt9" role="3cqZAp">
+        <node concept="2OqwBi" id="6sxj0_UABta" role="1gVkn0">
+          <node concept="37vLTw" id="6sxj0_UABtb" role="2Oq$k0">
+            <ref role="3cqZAo" node="6sxj0_UABsj" resolve="actions" />
+          </node>
+          <node concept="2HwmR7" id="6sxj0_UABtc" role="2OqNvi">
+            <node concept="1bVj0M" id="6sxj0_UABtd" role="23t8la">
+              <node concept="3clFbS" id="6sxj0_UABte" role="1bW5cS">
+                <node concept="3clFbF" id="6sxj0_UABtf" role="3cqZAp">
+                  <node concept="2OqwBi" id="6sxj0_UABtg" role="3clFbG">
+                    <node concept="2OqwBi" id="6sxj0_UABth" role="2Oq$k0">
+                      <node concept="37vLTw" id="6sxj0_UABti" role="2Oq$k0">
+                        <ref role="3cqZAo" node="6sxj0_UABtp" resolve="it" />
+                      </node>
+                      <node concept="liA8E" id="6sxj0_UABtj" role="2OqNvi">
+                        <ref role="37wK5l" to="f4zo:~SubstituteAction.getMatchingText(java.lang.String)" resolve="getMatchingText" />
+                        <node concept="Xl_RD" id="6sxj0_UABtk" role="37wK5m">
+                          <property role="Xl_RC" value="" />
+                        </node>
+                      </node>
+                    </node>
+                    <node concept="liA8E" id="6sxj0_UABtl" role="2OqNvi">
+                      <ref role="37wK5l" to="wyt6:~String.equals(java.lang.Object)" resolve="equals" />
+                      <node concept="2OqwBi" id="6sxj0_UABtm" role="37wK5m">
+                        <node concept="35c_gC" id="6sxj0_UABtn" role="2Oq$k0">
+                          <ref role="35c_gD" to="ibwz:1045PmWki5C" resolve="WrapStmtParentWhitelisting" />
+                        </node>
+                        <node concept="liA8E" id="6sxj0_UABto" role="2OqNvi">
+                          <ref role="37wK5l" to="c17a:~SAbstractConcept.getConceptAlias()" resolve="getConceptAlias" />
+                        </node>
+                      </node>
+                    </node>
+                  </node>
+                </node>
+              </node>
+              <node concept="Rh6nW" id="6sxj0_UABtp" role="1bW2Oz">
+                <property role="TrG5h" value="it" />
+                <node concept="2jxLKc" id="6sxj0_UABtq" role="1tU5fm" />
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="Xl_RD" id="6sxj0_UABtr" role="1gVpfI">
+          <property role="Xl_RC" value="Default wrapped Stmt not included in autocomplete menu" />
+        </node>
+      </node>
+    </node>
+  </node>
   <node concept="LiM7Y" id="3Lzx5Pf0iSH">
     <property role="TrG5h" value="GrammarWrapFilterConstraintsParentNode" />
     <property role="3YCmrE" value="Check whether grammar.wrap correctly applies node constraints for parent restrictions" />
@@ -3649,215 +3864,287 @@
       </node>
     </node>
   </node>
-  <node concept="LiM7Y" id="6sxj0_UzcRB">
-    <property role="TrG5h" value="GrammarWrapFilterConstraintsAncestorWhitelisting" />
-    <node concept="1qefOq" id="6sxj0_UzcSg" role="25YQCW">
-      <node concept="tFv_5" id="6sxj0_UAAEu" role="1qenE9">
-        <node concept="LIFWc" id="6sxj0_UAAEG" role="lGtFl">
-          <property role="ZRATv" value="true" />
-          <property role="OXtK3" value="true" />
-          <property role="p6zMq" value="0" />
-          <property role="p6zMs" value="0" />
-          <property role="LIFWd" value="empty_stmts" />
+  <node concept="LiM7Y" id="3aFJVZltoCa">
+    <property role="TrG5h" value="LayoutOfChildInOptional" />
+    <node concept="1qefOq" id="3aFJVZltoDk" role="25YQCW">
+      <node concept="2cssWn" id="3aFJVZltoDj" role="1qenE9">
+        <property role="TrG5h" value="a" />
+        <node concept="2cssWt" id="3aFJVZltoDv" role="2cssWm">
+          <property role="TrG5h" value="f" />
+          <node concept="2cssWo" id="3aFJVZltoDw" role="2cssWr">
+            <node concept="3BK__Q" id="3aFJVZltoD_" role="2cssZA">
+              <node concept="ywmH7" id="3aFJVZltFxu" role="3BK__P">
+                <node concept="yA7Z4" id="3aFJVZltFxC" role="ywYU2">
+                  <property role="yA7Zo" value="20" />
+                </node>
+                <node concept="yA7Z4" id="3aFJVZltFxo" role="ywYUd">
+                  <property role="yA7Zo" value="10" />
+                  <node concept="LIFWc" id="3aFJVZlyFjz" role="lGtFl">
+                    <property role="LIFWa" value="1" />
+                    <property role="OXtK3" value="true" />
+                    <property role="p6zMq" value="1" />
+                    <property role="p6zMs" value="1" />
+                    <property role="LIFWd" value="property_value" />
+                  </node>
+                </node>
+              </node>
+            </node>
+          </node>
+          <node concept="yzEQH" id="3aFJVZltFx3" role="yzEPe" />
         </node>
       </node>
     </node>
-    <node concept="3clFbS" id="6sxj0_UABs0" role="LjaKd">
-      <node concept="3cpWs8" id="6sxj0_UABsa" role="3cqZAp">
-        <node concept="3cpWsn" id="6sxj0_UABsb" role="3cpWs9">
-          <property role="TrG5h" value="si" />
-          <node concept="3uibUv" id="6sxj0_UABsc" role="1tU5fm">
-            <ref role="3uigEE" to="f4zo:~SubstituteInfo" resolve="SubstituteInfo" />
+    <node concept="3clFbS" id="3aFJVZlyfB2" role="LjaKd">
+      <node concept="3cpWs8" id="3aFJVZlyFn7" role="3cqZAp">
+        <node concept="3cpWsn" id="3aFJVZlyFn8" role="3cpWs9">
+          <property role="TrG5h" value="leftNumberLiteral" />
+          <node concept="3uibUv" id="3aFJVZlyFn9" role="1tU5fm">
+            <ref role="3uigEE" to="f4zo:~EditorCell" resolve="EditorCell" />
           </node>
-          <node concept="2OqwBi" id="6sxj0_UABsd" role="33vP2m">
-            <node concept="2OqwBi" id="6sxj0_UABse" role="2Oq$k0">
-              <node concept="369mXd" id="6sxj0_UABsf" role="2Oq$k0" />
-              <node concept="liA8E" id="6sxj0_UABsg" role="2OqNvi">
-                <ref role="37wK5l" to="exr9:~EditorComponent.getSelectedCell()" resolve="getSelectedCell" />
-              </node>
-            </node>
-            <node concept="liA8E" id="6sxj0_UABsh" role="2OqNvi">
-              <ref role="37wK5l" to="f4zo:~EditorCell.getSubstituteInfo()" resolve="getSubstituteInfo" />
+          <node concept="2OqwBi" id="3aFJVZlyFna" role="33vP2m">
+            <node concept="369mXd" id="3aFJVZlyFnb" role="2Oq$k0" />
+            <node concept="liA8E" id="3aFJVZlyFnc" role="2OqNvi">
+              <ref role="37wK5l" to="exr9:~EditorComponent.getSelectedCell()" resolve="getSelectedCell" />
             </node>
           </node>
         </node>
       </node>
-      <node concept="3cpWs8" id="6sxj0_UABsi" role="3cqZAp">
-        <node concept="3cpWsn" id="6sxj0_UABsj" role="3cpWs9">
-          <property role="TrG5h" value="actions" />
-          <node concept="_YKpA" id="6sxj0_UABsk" role="1tU5fm">
-            <node concept="3uibUv" id="6sxj0_UABsl" role="_ZDj9">
-              <ref role="3uigEE" to="f4zo:~SubstituteAction" resolve="SubstituteAction" />
+      <node concept="3vlDli" id="3aFJVZlyFzg" role="3cqZAp">
+        <node concept="2OqwBi" id="3aFJVZlyG1f" role="3tpDZA">
+          <node concept="2OqwBi" id="3aFJVZlyFGt" role="2Oq$k0">
+            <node concept="37vLTw" id="3aFJVZlyFzh" role="2Oq$k0">
+              <ref role="3cqZAo" node="3aFJVZlyFn8" resolve="leftNumberLiteral" />
             </node>
-          </node>
-          <node concept="2OqwBi" id="6sxj0_UABsm" role="33vP2m">
-            <node concept="37vLTw" id="6sxj0_UABsn" role="2Oq$k0">
-              <ref role="3cqZAo" node="6sxj0_UABsb" resolve="si" />
-            </node>
-            <node concept="liA8E" id="6sxj0_UABso" role="2OqNvi">
-              <ref role="37wK5l" to="f4zo:~SubstituteInfo.getMatchingActions(java.lang.String,boolean)" resolve="getMatchingActions" />
-              <node concept="Xl_RD" id="6sxj0_UABsp" role="37wK5m">
-                <property role="Xl_RC" value="" />
-              </node>
-              <node concept="3clFbT" id="6sxj0_UABsq" role="37wK5m" />
+            <node concept="liA8E" id="3aFJVZlyFPx" role="2OqNvi">
+              <ref role="37wK5l" to="f4zo:~EditorCell.getSNode()" resolve="getSNode" />
             </node>
           </node>
+          <node concept="liA8E" id="3aFJVZlyGcH" role="2OqNvi">
+            <ref role="37wK5l" to="mhbf:~SNode.getConcept()" resolve="getConcept" />
+          </node>
+        </node>
+        <node concept="35c_gC" id="3aFJVZlyFzi" role="3tpDZB">
+          <ref role="35c_gD" to="ibwz:4qdNcH$5rcf" resolve="IntLiteral" />
         </node>
       </node>
-      <node concept="1gVbGN" id="6sxj0_UABsr" role="3cqZAp">
-        <node concept="3clFbC" id="6sxj0_UABss" role="1gVkn0">
-          <node concept="3cmrfG" id="6sxj0_UABst" role="3uHU7w">
-            <property role="3cmrfH" value="2" />
+      <node concept="3clFbH" id="3aFJVZlyFwJ" role="3cqZAp" />
+      <node concept="3cpWs8" id="3aFJVZlyg_c" role="3cqZAp">
+        <node concept="3cpWsn" id="3aFJVZlyg_d" role="3cpWs9">
+          <property role="TrG5h" value="plusExpression" />
+          <node concept="3uibUv" id="3aFJVZlyg$M" role="1tU5fm">
+            <ref role="3uigEE" to="f4zo:~EditorCell" resolve="EditorCell" />
           </node>
-          <node concept="2OqwBi" id="6sxj0_UABsu" role="3uHU7B">
-            <node concept="37vLTw" id="6sxj0_UABsv" role="2Oq$k0">
-              <ref role="3cqZAo" node="6sxj0_UABsj" resolve="actions" />
+          <node concept="2OqwBi" id="3aFJVZl$hSE" role="33vP2m">
+            <node concept="2OqwBi" id="3aFJVZlyIYY" role="2Oq$k0">
+              <node concept="2OqwBi" id="3aFJVZlyGoY" role="2Oq$k0">
+                <node concept="37vLTw" id="3aFJVZlyGiF" role="2Oq$k0">
+                  <ref role="3cqZAo" node="3aFJVZlyFn8" resolve="leftNumberLiteral" />
+                </node>
+                <node concept="liA8E" id="3aFJVZlyGyS" role="2OqNvi">
+                  <ref role="37wK5l" to="f4zo:~EditorCell.getParent()" resolve="getParent" />
+                </node>
+              </node>
+              <node concept="liA8E" id="3aFJVZlyJ5r" role="2OqNvi">
+                <ref role="37wK5l" to="f4zo:~EditorCell.getParent()" resolve="getParent" />
+              </node>
+            </node>
+            <node concept="liA8E" id="3aFJVZl$ifP" role="2OqNvi">
+              <ref role="37wK5l" to="f4zo:~EditorCell.getParent()" resolve="getParent" />
             </node>
-            <node concept="34oBXx" id="6sxj0_UABsw" role="2OqNvi" />
           </node>
         </node>
-        <node concept="Xl_RD" id="6sxj0_UABsx" role="1gVpfI">
-          <property role="Xl_RC" value="Maximum of 2 actions, Type A and WrapStmt expected" />
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       </node>
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-        <node concept="3fqX7Q" id="6sxj0_UABsz" role="1gVkn0">
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-            <node concept="37vLTw" id="6sxj0_UABs_" role="2Oq$k0">
-              <ref role="3cqZAo" node="6sxj0_UABsj" resolve="actions" />
+      <node concept="3vlDli" id="3aFJVZlyG_d" role="3cqZAp">
+        <node concept="2OqwBi" id="3aFJVZlyG_e" role="3tpDZA">
+          <node concept="2OqwBi" id="3aFJVZlyG_f" role="2Oq$k0">
+            <node concept="37vLTw" id="3aFJVZlyG_g" role="2Oq$k0">
+              <ref role="3cqZAo" node="3aFJVZlyg_d" resolve="plusExpression" />
             </node>
-            <node concept="2HwmR7" id="6sxj0_UABsA" role="2OqNvi">
-              <node concept="1bVj0M" id="6sxj0_UABsB" role="23t8la">
-                <node concept="3clFbS" id="6sxj0_UABsC" role="1bW5cS">
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-                    <node concept="2OqwBi" id="6sxj0_UABsE" role="3clFbG">
-                      <node concept="2OqwBi" id="6sxj0_UABsF" role="2Oq$k0">
-                        <node concept="37vLTw" id="6sxj0_UABsG" role="2Oq$k0">
-                          <ref role="3cqZAo" node="6sxj0_UABsN" resolve="it" />
-                        </node>
-                        <node concept="liA8E" id="6sxj0_UABsH" role="2OqNvi">
-                          <ref role="37wK5l" to="f4zo:~SubstituteAction.getMatchingText(java.lang.String)" resolve="getMatchingText" />
-                          <node concept="Xl_RD" id="6sxj0_UABsI" role="37wK5m">
-                            <property role="Xl_RC" value="" />
-                          </node>
-                        </node>
-                      </node>
-                      <node concept="liA8E" id="6sxj0_UABsJ" role="2OqNvi">
-                        <ref role="37wK5l" to="wyt6:~String.equals(java.lang.Object)" resolve="equals" />
-                        <node concept="2OqwBi" id="6sxj0_UABsK" role="37wK5m">
-                          <node concept="35c_gC" id="6sxj0_UABsL" role="2Oq$k0">
-                            <ref role="35c_gD" to="ibwz:3Lzx5Pf0k2q" resolve="AType" />
-                          </node>
-                          <node concept="liA8E" id="6sxj0_UABsM" role="2OqNvi">
-                            <ref role="37wK5l" to="c17a:~SAbstractConcept.getConceptAlias()" resolve="getConceptAlias" />
-                          </node>
-                        </node>
-                      </node>
-                    </node>
-                  </node>
-                </node>
-                <node concept="Rh6nW" id="6sxj0_UABsN" role="1bW2Oz">
-                  <property role="TrG5h" value="it" />
-                  <node concept="2jxLKc" id="6sxj0_UABsO" role="1tU5fm" />
-                </node>
-              </node>
+            <node concept="liA8E" id="3aFJVZlyG_h" role="2OqNvi">
+              <ref role="37wK5l" to="f4zo:~EditorCell.getSNode()" resolve="getSNode" />
             </node>
           </node>
+          <node concept="liA8E" id="3aFJVZlyG_i" role="2OqNvi">
+            <ref role="37wK5l" to="mhbf:~SNode.getConcept()" resolve="getConcept" />
+          </node>
         </node>
-        <node concept="Xl_RD" id="6sxj0_UABsP" role="1gVpfI">
-          <property role="Xl_RC" value="Type A not excluded from autocomplete menu" />
+        <node concept="35c_gC" id="3aFJVZlyG_j" role="3tpDZB">
+          <ref role="35c_gD" to="ibwz:4qdNcH$3auc" resolve="PlusExpression" />
         </node>
       </node>
-      <node concept="1gVbGN" id="6sxj0_UABsQ" role="3cqZAp">
-        <node concept="2OqwBi" id="6sxj0_UABsR" role="1gVkn0">
-          <node concept="37vLTw" id="6sxj0_UABsS" role="2Oq$k0">
-            <ref role="3cqZAo" node="6sxj0_UABsj" resolve="actions" />
+      <node concept="3vlDli" id="3aFJVZl$eEq" role="3cqZAp">
+        <node concept="Xl_RD" id="3aFJVZl$eIK" role="3tpDZB">
+          <property role="Xl_RC" value="binaryExpressionRoot" />
+        </node>
+        <node concept="2OqwBi" id="3aFJVZl$eTi" role="3tpDZA">
+          <node concept="37vLTw" id="3aFJVZl$eM0" role="2Oq$k0">
+            <ref role="3cqZAo" node="3aFJVZlyg_d" resolve="plusExpression" />
           </node>
-          <node concept="2HwmR7" id="6sxj0_UABsT" role="2OqNvi">
-            <node concept="1bVj0M" id="6sxj0_UABsU" role="23t8la">
-              <node concept="3clFbS" id="6sxj0_UABsV" role="1bW5cS">
-                <node concept="3clFbF" id="6sxj0_UABsW" role="3cqZAp">
-                  <node concept="2OqwBi" id="6sxj0_UABsX" role="3clFbG">
-                    <node concept="2OqwBi" id="6sxj0_UABsY" role="2Oq$k0">
-                      <node concept="37vLTw" id="6sxj0_UABsZ" role="2Oq$k0">
-                        <ref role="3cqZAo" node="6sxj0_UABt6" resolve="it" />
-                      </node>
-                      <node concept="liA8E" id="6sxj0_UABt0" role="2OqNvi">
-                        <ref role="37wK5l" to="f4zo:~SubstituteAction.getMatchingText(java.lang.String)" resolve="getMatchingText" />
-                        <node concept="Xl_RD" id="6sxj0_UABt1" role="37wK5m" />
-                      </node>
-                    </node>
-                    <node concept="liA8E" id="6sxj0_UABt2" role="2OqNvi">
-                      <ref role="37wK5l" to="wyt6:~String.equals(java.lang.Object)" resolve="equals" />
-                      <node concept="2OqwBi" id="6sxj0_UABt3" role="37wK5m">
-                        <node concept="35c_gC" id="6sxj0_UABt4" role="2Oq$k0">
-                          <ref role="35c_gD" to="ibwz:3Lzx5Pf0k5B" resolve="BType" />
-                        </node>
-                        <node concept="liA8E" id="6sxj0_UABt5" role="2OqNvi">
-                          <ref role="37wK5l" to="c17a:~SAbstractConcept.getConceptAlias()" resolve="getConceptAlias" />
-                        </node>
-                      </node>
-                    </node>
-                  </node>
-                </node>
-              </node>
-              <node concept="Rh6nW" id="6sxj0_UABt6" role="1bW2Oz">
-                <property role="TrG5h" value="it" />
-                <node concept="2jxLKc" id="6sxj0_UABt7" role="1tU5fm" />
-              </node>
+          <node concept="liA8E" id="3aFJVZl$f4C" role="2OqNvi">
+            <ref role="37wK5l" to="f4zo:~EditorCell.getCellId()" resolve="getCellId" />
+          </node>
+        </node>
+      </node>
+      <node concept="3clFbH" id="3aFJVZlyGdy" role="3cqZAp" />
+      <node concept="3cpWs8" id="3aFJVZlygO9" role="3cqZAp">
+        <node concept="3cpWsn" id="3aFJVZlygOa" role="3cpWs9">
+          <property role="TrG5h" value="plusExpressionParent" />
+          <node concept="3uibUv" id="3aFJVZlygN4" role="1tU5fm">
+            <ref role="3uigEE" to="f4zo:~EditorCell_Collection" resolve="EditorCell_Collection" />
+          </node>
+          <node concept="2OqwBi" id="3aFJVZlygOb" role="33vP2m">
+            <node concept="37vLTw" id="3aFJVZlygOc" role="2Oq$k0">
+              <ref role="3cqZAo" node="3aFJVZlyg_d" resolve="plusExpression" />
+            </node>
+            <node concept="liA8E" id="3aFJVZlygOd" role="2OqNvi">
+              <ref role="37wK5l" to="f4zo:~EditorCell.getParent()" resolve="getParent" />
             </node>
           </node>
         </node>
-        <node concept="Xl_RD" id="6sxj0_UABt8" role="1gVpfI">
-          <property role="Xl_RC" value="Type B not included in autocomplete menu" />
+      </node>
+      <node concept="3vlDli" id="3aFJVZly_4o" role="3cqZAp">
+        <node concept="35c_gC" id="3aFJVZly_9G" role="3tpDZB">
+          <ref role="35c_gD" to="ibwz:3aFJVZlqur9" resolve="TEST_LayoutOfChildInOptional" />
+        </node>
+        <node concept="2OqwBi" id="3aFJVZlyzEE" role="3tpDZA">
+          <node concept="2OqwBi" id="3aFJVZlyzEF" role="2Oq$k0">
+            <node concept="37vLTw" id="3aFJVZlyzEG" role="2Oq$k0">
+              <ref role="3cqZAo" node="3aFJVZlygOa" resolve="plusExpressionParent" />
+            </node>
+            <node concept="liA8E" id="3aFJVZlyzEH" role="2OqNvi">
+              <ref role="37wK5l" to="f4zo:~EditorCell.getSNode()" resolve="getSNode" />
+            </node>
+          </node>
+          <node concept="liA8E" id="3aFJVZlyzEI" role="2OqNvi">
+            <ref role="37wK5l" to="mhbf:~SNode.getConcept()" resolve="getConcept" />
+          </node>
         </node>
       </node>
-      <node concept="1gVbGN" id="6sxj0_UABt9" role="3cqZAp">
-        <node concept="2OqwBi" id="6sxj0_UABta" role="1gVkn0">
-          <node concept="37vLTw" id="6sxj0_UABtb" role="2Oq$k0">
-            <ref role="3cqZAo" node="6sxj0_UABsj" resolve="actions" />
+      <node concept="3clFbH" id="3aFJVZlALPP" role="3cqZAp" />
+      <node concept="3SKdUt" id="3aFJVZlALWx" role="3cqZAp">
+        <node concept="1PaTwC" id="3aFJVZlALWy" role="1aUNEU">
+          <node concept="3oM_SD" id="3aFJVZlAM1n" role="1PaTwD">
+            <property role="3oM_SC" value="There" />
           </node>
-          <node concept="2HwmR7" id="6sxj0_UABtc" role="2OqNvi">
-            <node concept="1bVj0M" id="6sxj0_UABtd" role="23t8la">
-              <node concept="3clFbS" id="6sxj0_UABte" role="1bW5cS">
-                <node concept="3clFbF" id="6sxj0_UABtf" role="3cqZAp">
-                  <node concept="2OqwBi" id="6sxj0_UABtg" role="3clFbG">
-                    <node concept="2OqwBi" id="6sxj0_UABth" role="2Oq$k0">
-                      <node concept="37vLTw" id="6sxj0_UABti" role="2Oq$k0">
-                        <ref role="3cqZAo" node="6sxj0_UABtp" resolve="it" />
-                      </node>
-                      <node concept="liA8E" id="6sxj0_UABtj" role="2OqNvi">
-                        <ref role="37wK5l" to="f4zo:~SubstituteAction.getMatchingText(java.lang.String)" resolve="getMatchingText" />
-                        <node concept="Xl_RD" id="6sxj0_UABtk" role="37wK5m">
-                          <property role="Xl_RC" value="" />
-                        </node>
-                      </node>
-                    </node>
-                    <node concept="liA8E" id="6sxj0_UABtl" role="2OqNvi">
-                      <ref role="37wK5l" to="wyt6:~String.equals(java.lang.Object)" resolve="equals" />
-                      <node concept="2OqwBi" id="6sxj0_UABtm" role="37wK5m">
-                        <node concept="35c_gC" id="6sxj0_UABtn" role="2Oq$k0">
-                          <ref role="35c_gD" to="ibwz:1045PmWki5C" resolve="WrapStmtParentWhitelisting" />
-                        </node>
-                        <node concept="liA8E" id="6sxj0_UABto" role="2OqNvi">
-                          <ref role="37wK5l" to="c17a:~SAbstractConcept.getConceptAlias()" resolve="getConceptAlias" />
-                        </node>
-                      </node>
-                    </node>
-                  </node>
-                </node>
-              </node>
-              <node concept="Rh6nW" id="6sxj0_UABtp" role="1bW2Oz">
-                <property role="TrG5h" value="it" />
-                <node concept="2jxLKc" id="6sxj0_UABtq" role="1tU5fm" />
-              </node>
-            </node>
+          <node concept="3oM_SD" id="3aFJVZlAM1p" role="1PaTwD">
+            <property role="3oM_SC" value="was" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAM1s" role="1PaTwD">
+            <property role="3oM_SC" value="a" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAM1w" role="1PaTwD">
+            <property role="3oM_SC" value="bug" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAM1_" role="1PaTwD">
+            <property role="3oM_SC" value="that" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAM1F" role="1PaTwD">
+            <property role="3oM_SC" value="causes" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAM1M" role="1PaTwD">
+            <property role="3oM_SC" value="the" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAM1U" role="1PaTwD">
+            <property role="3oM_SC" value="following" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAM23" role="1PaTwD">
+            <property role="3oM_SC" value="rule" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAM2d" role="1PaTwD">
+            <property role="3oM_SC" value="in" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAM2o" role="1PaTwD">
+            <property role="3oM_SC" value="MPS" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAM2$" role="1PaTwD">
+            <property role="3oM_SC" value="to" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAM2L" role="1PaTwD">
+            <property role="3oM_SC" value="generate" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAM2Z" role="1PaTwD">
+            <property role="3oM_SC" value="an" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAM3J" role="1PaTwD">
+            <property role="3oM_SC" value="additional" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAM3Z" role="1PaTwD">
+            <property role="3oM_SC" value="collection" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAM4g" role="1PaTwD">
+            <property role="3oM_SC" value="around" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAM4y" role="1PaTwD">
+            <property role="3oM_SC" value="the" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAM4P" role="1PaTwD">
+            <property role="3oM_SC" value="plus" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAM7g" role="1PaTwD">
+            <property role="3oM_SC" value="expression:" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAM7V" role="1PaTwD">
+            <property role="3oM_SC" value="http://127.0.0.1:63320/node?ref=r%3A00000000-0000-4000-0000-011c8959029f%28jetbrains.mps.lang.editor.generator.baseLanguage.template.main%40generator%29%2F788259967052217838" />
           </node>
         </node>
-        <node concept="Xl_RD" id="6sxj0_UABtr" role="1gVpfI">
-          <property role="Xl_RC" value="Default wrapped Stmt not included in autocomplete menu" />
+      </node>
+      <node concept="3SKdUt" id="3aFJVZlAMer" role="3cqZAp">
+        <node concept="1PaTwC" id="3aFJVZlAMes" role="1aUNEU">
+          <node concept="3oM_SD" id="3aFJVZlAMjo" role="1PaTwD">
+            <property role="3oM_SC" value="In" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAMjq" role="1PaTwD">
+            <property role="3oM_SC" value="that" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAMjt" role="1PaTwD">
+            <property role="3oM_SC" value="case" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAMjx" role="1PaTwD">
+            <property role="3oM_SC" value="the" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAMk2" role="1PaTwD">
+            <property role="3oM_SC" value="'plusExpressionParent'" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAMk8" role="1PaTwD">
+            <property role="3oM_SC" value="would" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAMkf" role="1PaTwD">
+            <property role="3oM_SC" value="be" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAMkn" role="1PaTwD">
+            <property role="3oM_SC" value="different" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAMkw" role="1PaTwD">
+            <property role="3oM_SC" value="cell" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAMl1" role="1PaTwD">
+            <property role="3oM_SC" value="with" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAMlc" role="1PaTwD">
+            <property role="3oM_SC" value="a" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAMlo" role="1PaTwD">
+            <property role="3oM_SC" value="different" />
+          </node>
+          <node concept="3oM_SD" id="3aFJVZlAMl_" role="1PaTwD">
+            <property role="3oM_SC" value="ID" />
+          </node>
+        </node>
+      </node>
+      <node concept="3vlDli" id="3aFJVZlykqL" role="3cqZAp">
+        <node concept="Xl_RD" id="3aFJVZlyksK" role="3tpDZB">
+          <property role="Xl_RC" value="testConceptRoot" />
+        </node>
+        <node concept="2OqwBi" id="3aFJVZlykEh" role="3tpDZA">
+          <node concept="37vLTw" id="3aFJVZlyktT" role="2Oq$k0">
+            <ref role="3cqZAo" node="3aFJVZlygOa" resolve="plusExpressionParent" />
+          </node>
+          <node concept="liA8E" id="3aFJVZlyl0t" role="2OqNvi">
+            <ref role="37wK5l" to="f4zo:~EditorCell.getCellId()" resolve="getCellId" />
+          </node>
         </node>
       </node>
+      <node concept="3clFbH" id="3aFJVZlyfBe" role="3cqZAp" />
     </node>
   </node>
 </model>
diff --git a/code/languages/de.itemis.model.merge.baselang/de.itemis.model.merge.baselang.mpl b/code/languages/de.itemis.model.merge.baselang/de.itemis.model.merge.baselang.mpl
index 8d1acd607..fd741a443 100644
--- a/code/languages/de.itemis.model.merge.baselang/de.itemis.model.merge.baselang.mpl
+++ b/code/languages/de.itemis.model.merge.baselang/de.itemis.model.merge.baselang.mpl
@@ -89,6 +89,8 @@
     <language slang="l:3ad5badc-1d9c-461c-b7b1-fa2fcd0a0ae7:jetbrains.mps.lang.context" version="0" />
     <language slang="l:ea3159bf-f48e-4720-bde2-86dba75f0d34:jetbrains.mps.lang.context.defs" version="0" />
     <language slang="l:ceab5195-25ea-4f22-9b92-103b95ca8c0c:jetbrains.mps.lang.core" version="2" />
+    <language slang="l:7fa12e9c-b949-4976-b4fa-19accbc320b4:jetbrains.mps.lang.dataFlow" version="1" />
+    <language slang="l:97a52717-898f-4598-8150-573d9fd03868:jetbrains.mps.lang.dataFlow.analyzers" version="0" />
     <language slang="l:f4ad079d-bc71-4ffb-9600-9328705cf998:jetbrains.mps.lang.descriptor" version="0" />
     <language slang="l:18bc6592-03a6-4e29-a83a-7ff23bde13ba:jetbrains.mps.lang.editor" version="14" />
     <language slang="l:ad93155d-79b2-4759-b10c-55123e763903:jetbrains.mps.lang.messages" version="0" />
diff --git a/code/languages/de.itemis.model.merge.baselang/models/de.itemis.model.merge.baselang.dataFlow.mps b/code/languages/de.itemis.model.merge.baselang/models/de.itemis.model.merge.baselang.dataFlow.mps
new file mode 100644
index 000000000..2a51e5f74
--- /dev/null
+++ b/code/languages/de.itemis.model.merge.baselang/models/de.itemis.model.merge.baselang.dataFlow.mps
@@ -0,0 +1,73 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<model ref="r:3d64133b-14e3-4b17-a35c-cd5d222705a7(de.itemis.model.merge.baselang.dataFlow)">
+  <persistence version="9" />
+  <languages>
+    <use id="7fa12e9c-b949-4976-b4fa-19accbc320b4" name="jetbrains.mps.lang.dataFlow" version="1" />
+    <devkit ref="00000000-0000-4000-0000-443879f56b80(jetbrains.mps.devkit.aspect.dataflow)" />
+  </languages>
+  <imports>
+    <import index="pkjs" ref="r:f7ecea4a-4de7-40e3-9fe6-730099dc17e1(de.itemis.model.merge.baselang.structure)" implicit="true" />
+  </imports>
+  <registry>
+    <language id="f3061a53-9226-4cc5-a443-f952ceaf5816" name="jetbrains.mps.baseLanguage">
+      <concept id="1197027756228" name="jetbrains.mps.baseLanguage.structure.DotExpression" flags="nn" index="2OqwBi">
+        <child id="1197027771414" name="operand" index="2Oq$k0" />
+        <child id="1197027833540" name="operation" index="2OqNvi" />
+      </concept>
+      <concept id="1137021947720" name="jetbrains.mps.baseLanguage.structure.ConceptFunction" flags="in" index="2VMwT0">
+        <child id="1137022507850" name="body" index="2VODD2" />
+      </concept>
+      <concept id="1068580123136" name="jetbrains.mps.baseLanguage.structure.StatementList" flags="sn" stub="5293379017992965193" index="3clFbS">
+        <child id="1068581517665" name="statement" index="3cqZAp" />
+      </concept>
+    </language>
+    <language id="7fa12e9c-b949-4976-b4fa-19accbc320b4" name="jetbrains.mps.lang.dataFlow">
+      <concept id="1206442055221" name="jetbrains.mps.lang.dataFlow.structure.DataFlowBuilderDeclaration" flags="ig" index="3_zdsH">
+        <reference id="1206442096288" name="conceptDeclaration" index="3_znuS" />
+        <child id="1206442812839" name="builderBlock" index="3_A6iZ" />
+      </concept>
+      <concept id="1206442659665" name="jetbrains.mps.lang.dataFlow.structure.BuilderBlock" flags="in" index="3__wT9" />
+      <concept id="1206442747519" name="jetbrains.mps.lang.dataFlow.structure.NodeParameter" flags="nn" index="3__QtB" />
+      <concept id="1206454052847" name="jetbrains.mps.lang.dataFlow.structure.EmitCodeForStatement" flags="nn" index="3AgYrR">
+        <child id="1206454079161" name="codeFor" index="3Ah4Yx" />
+      </concept>
+    </language>
+    <language id="7866978e-a0f0-4cc7-81bc-4d213d9375e1" name="jetbrains.mps.lang.smodel">
+      <concept id="1138056143562" name="jetbrains.mps.lang.smodel.structure.SLinkAccess" flags="nn" index="3TrEf2">
+        <reference id="1138056516764" name="link" index="3Tt5mk" />
+      </concept>
+    </language>
+  </registry>
+  <node concept="3_zdsH" id="3O6HwxRSQ3F">
+    <ref role="3_znuS" to="pkjs:5anw8kxHXKx" resolve="ModelMergerExpression" />
+    <node concept="3__wT9" id="3O6HwxRSQ3G" role="3_A6iZ">
+      <node concept="3clFbS" id="3O6HwxRSQ3H" role="2VODD2">
+        <node concept="3AgYrR" id="3O6HwxRSQaP" role="3cqZAp">
+          <node concept="2OqwBi" id="3O6HwxRSQk1" role="3Ah4Yx">
+            <node concept="3__QtB" id="3O6HwxRSQbc" role="2Oq$k0" />
+            <node concept="3TrEf2" id="3O6HwxRSQyB" role="2OqNvi">
+              <ref role="3Tt5mk" to="pkjs:5anw8kxL4IV" resolve="left" />
+            </node>
+          </node>
+        </node>
+        <node concept="3AgYrR" id="3O6HwxRSQ_G" role="3cqZAp">
+          <node concept="2OqwBi" id="3O6HwxRSQAz" role="3Ah4Yx">
+            <node concept="3__QtB" id="3O6HwxRSQAj" role="2Oq$k0" />
+            <node concept="3TrEf2" id="3O6HwxRSQCd" role="2OqNvi">
+              <ref role="3Tt5mk" to="pkjs:5anw8kxL4Up" resolve="right" />
+            </node>
+          </node>
+        </node>
+        <node concept="3AgYrR" id="3O6HwxRSQFw" role="3cqZAp">
+          <node concept="2OqwBi" id="3O6HwxRSQPa" role="3Ah4Yx">
+            <node concept="3__QtB" id="3O6HwxRSQGl" role="2Oq$k0" />
+            <node concept="3TrEf2" id="3O6HwxRSR3K" role="2OqNvi">
+              <ref role="3Tt5mk" to="pkjs:5anw8kxL4Us" resolve="modelMerge" />
+            </node>
+          </node>
+        </node>
+      </node>
+    </node>
+  </node>
+</model>
+
diff --git a/code/languages/de.itemis.model.merge/models/de.itemis.model.merge.structure.mps b/code/languages/de.itemis.model.merge/models/de.itemis.model.merge.structure.mps
index 7d3c94fb3..7c641ca5b 100644
--- a/code/languages/de.itemis.model.merge/models/de.itemis.model.merge.structure.mps
+++ b/code/languages/de.itemis.model.merge/models/de.itemis.model.merge.structure.mps
@@ -224,7 +224,7 @@
     <property role="TrG5h" value="Drop" />
     <property role="3GE5qa" value="action" />
     <property role="34LRSv" value="Drop" />
-    <property role="R4oN_" value="Drops Item In Case Of Conflict" />
+    <property role="R4oN_" value="Drops Item" />
     <ref role="1TJDcQ" node="6zqIeMU2RWS" resolve="AbstractMergeAction" />
   </node>
   <node concept="1TIwiD" id="7jyS5urbByR">
@@ -232,7 +232,7 @@
     <property role="TrG5h" value="Auto" />
     <property role="3GE5qa" value="action" />
     <property role="34LRSv" value="Auto" />
-    <property role="R4oN_" value="Do Some Magic (ToDo)" />
+    <property role="R4oN_" value="Apply Merge Actions Of Children" />
     <ref role="1TJDcQ" node="6zqIeMU2RWS" resolve="AbstractMergeAction" />
   </node>
   <node concept="1TIwiD" id="7jyS5urbFgb">
@@ -305,17 +305,17 @@
     <node concept="25R33" id="1VmHfRxJErv" role="25R1y">
       <property role="3tVfz5" value="2222162468661012191" />
       <property role="TrG5h" value="NewOnRight" />
-      <property role="1L1pqM" value="New Element On The Right" />
+      <property role="1L1pqM" value="Element Exists Only On The Right" />
     </node>
     <node concept="25R33" id="1VmHfRxJErw" role="25R1y">
       <property role="3tVfz5" value="2222162468661012192" />
       <property role="TrG5h" value="ExistsOnLeft" />
-      <property role="1L1pqM" value="Element Exists only On Left Side" />
+      <property role="1L1pqM" value="Element Exists Only On Left Side" />
     </node>
     <node concept="25R33" id="1VmHfRxJErz" role="25R1y">
       <property role="3tVfz5" value="2222162468661012195" />
       <property role="TrG5h" value="ElementOnBoth" />
-      <property role="1L1pqM" value="Element On Both Sides" />
+      <property role="1L1pqM" value="Element Exists On Both Sides" />
     </node>
   </node>
   <node concept="1TIwiD" id="1VmHfRxKMgU">
diff --git a/code/model-api/org.modelix.model.mpsadapters/models/org.modelix.model.mpsadapters.mps.mps b/code/model-api/org.modelix.model.mpsadapters/models/org.modelix.model.mpsadapters.mps.mps
index 46cb8fb79..88614c9cb 100644
--- a/code/model-api/org.modelix.model.mpsadapters/models/org.modelix.model.mpsadapters.mps.mps
+++ b/code/model-api/org.modelix.model.mpsadapters/models/org.modelix.model.mpsadapters.mps.mps
@@ -3771,6 +3771,9 @@
     </node>
     <node concept="2tJIrI" id="5gTrVpGjEOF" role="jymVt" />
     <node concept="3Tm1VV" id="5gTrVpGjuLh" role="1B3o_S" />
+    <node concept="3uibUv" id="16JGHGUSd7h" role="EKbjA">
+      <ref role="3uigEE" to="jks5:~INodeEx" resolve="INodeEx" />
+    </node>
     <node concept="3clFbW" id="5gTrVpGjEP4" role="jymVt">
       <node concept="3cqZAl" id="5gTrVpGjEP5" role="3clF45" />
       <node concept="3Tm6S6" id="4EhVFrZi6lh" role="1B3o_S" />
@@ -6465,9 +6468,6 @@
         <ref role="2AI5Lk" to="wyt6:~Override" resolve="Override" />
       </node>
     </node>
-    <node concept="3uibUv" id="16JGHGUSd7h" role="EKbjA">
-      <ref role="3uigEE" to="jks5:~INodeEx" resolve="INodeEx" />
-    </node>
   </node>
   <node concept="312cEu" id="4EhVFrZ3AjR">
     <property role="TrG5h" value="NodeToSNodeAdapter" />
@@ -9408,6 +9408,7 @@
       <node concept="2AHcQZ" id="4EhVFrZ3Ar4" role="2AJF6D">
         <ref role="2AI5Lk" to="mhfm:~Nullable" resolve="Nullable" />
       </node>
+      <node concept="17QB3L" id="16JGHGUZZVP" role="3clF45" />
       <node concept="37vLTG" id="4EhVFrZ3Ar6" role="3clF46">
         <property role="TrG5h" value="property" />
         <node concept="3uibUv" id="4EhVFrZ3Ar7" role="1tU5fm">
@@ -9442,7 +9443,6 @@
       <node concept="2AHcQZ" id="4EhVFrZ3Ara" role="2AJF6D">
         <ref role="2AI5Lk" to="wyt6:~Override" resolve="Override" />
       </node>
-      <node concept="17QB3L" id="16JGHGUZZVP" role="3clF45" />
     </node>
     <node concept="3clFb_" id="4EhVFrZ3Ard" role="jymVt">
       <property role="1EzhhJ" value="false" />
diff --git a/code/modelmerger/solutions/tests.de.itemis.mps.modelmerger/tests.de.itemis.mps.modelmerger.msd b/code/modelmerger/solutions/tests.de.itemis.mps.modelmerger/tests.de.itemis.mps.modelmerger.msd
index ba5e6a399..7e0b3a28d 100644
--- a/code/modelmerger/solutions/tests.de.itemis.mps.modelmerger/tests.de.itemis.mps.modelmerger.msd
+++ b/code/modelmerger/solutions/tests.de.itemis.mps.modelmerger/tests.de.itemis.mps.modelmerger.msd
@@ -17,6 +17,7 @@
     <dependency reexport="false">6ed54515-acc8-4d1e-a16c-9fd6cfe951ea(MPS.Core)</dependency>
     <dependency reexport="false">d119cd03-ed7e-477f-adb6-22a3d2e6ea77(test.de.itemis.mps.modelmerger.testlanguage)</dependency>
     <dependency reexport="false">ceab5195-25ea-4f22-9b92-103b95ca8c0c(jetbrains.mps.lang.core)</dependency>
+    <dependency reexport="false">6354ebe7-c22a-4a0f-ac54-50b52ab9b065(JDK)</dependency>
   </dependencies>
   <languageVersions>
     <language slang="l:f3061a53-9226-4cc5-a443-f952ceaf5816:jetbrains.mps.baseLanguage" version="12" />
diff --git a/code/solutions/de.itemis.model.merge.runtime/models/de.itemis.model.merge.runtime.runtime.mps b/code/solutions/de.itemis.model.merge.runtime/models/de.itemis.model.merge.runtime.runtime.mps
index d04883f92..e6fe696fa 100644
--- a/code/solutions/de.itemis.model.merge.runtime/models/de.itemis.model.merge.runtime.runtime.mps
+++ b/code/solutions/de.itemis.model.merge.runtime/models/de.itemis.model.merge.runtime.runtime.mps
@@ -413,13 +413,21 @@
         <child id="1237721435807" name="elementType" index="HW$YZ" />
       </concept>
       <concept id="1227008614712" name="jetbrains.mps.baseLanguage.collections.structure.LinkedListCreator" flags="nn" index="2Jqq0_" />
+      <concept id="1227022159410" name="jetbrains.mps.baseLanguage.collections.structure.AddFirstElementOperation" flags="nn" index="2Ke4WJ" />
       <concept id="1203518072036" name="jetbrains.mps.baseLanguage.collections.structure.SmartClosureParameterDeclaration" flags="ig" index="Rh6nW" />
       <concept id="1160600644654" name="jetbrains.mps.baseLanguage.collections.structure.ListCreatorWithInit" flags="nn" index="Tc6Ow" />
       <concept id="1160612413312" name="jetbrains.mps.baseLanguage.collections.structure.AddElementOperation" flags="nn" index="TSZUe" />
+      <concept id="1171391069720" name="jetbrains.mps.baseLanguage.collections.structure.GetIndexOfOperation" flags="nn" index="2WmjW8" />
       <concept id="1160666733551" name="jetbrains.mps.baseLanguage.collections.structure.AddAllElementsOperation" flags="nn" index="X8dFx" />
       <concept id="1162935959151" name="jetbrains.mps.baseLanguage.collections.structure.GetSizeOperation" flags="nn" index="34oBXx" />
+      <concept id="1175845471038" name="jetbrains.mps.baseLanguage.collections.structure.ReverseOperation" flags="nn" index="35Qw8J" />
+      <concept id="5633809102336885303" name="jetbrains.mps.baseLanguage.collections.structure.SubListOperation" flags="nn" index="3b24QK">
+        <child id="5633809102336885321" name="upToIndex" index="3b24Re" />
+        <child id="5633809102336885320" name="fromIndex" index="3b24Rf" />
+      </concept>
       <concept id="1167380149909" name="jetbrains.mps.baseLanguage.collections.structure.RemoveElementOperation" flags="nn" index="3dhRuq" />
       <concept id="1201792049884" name="jetbrains.mps.baseLanguage.collections.structure.TranslateOperation" flags="nn" index="3goQfb" />
+      <concept id="1173946412755" name="jetbrains.mps.baseLanguage.collections.structure.RemoveAllElementsOperation" flags="nn" index="1kEaZ2" />
       <concept id="1201872418428" name="jetbrains.mps.baseLanguage.collections.structure.GetKeysOperation" flags="nn" index="3lbrtF" />
       <concept id="1197683403723" name="jetbrains.mps.baseLanguage.collections.structure.MapType" flags="in" index="3rvAFt">
         <child id="1197683466920" name="keyType" index="3rvQeY" />
@@ -2010,6 +2018,146 @@
             </node>
           </node>
         </node>
+        <node concept="3SKdUt" id="2tzyNymsyxD" role="3cqZAp">
+          <node concept="1PaTwC" id="2tzyNymsyxE" role="1aUNEU">
+            <node concept="3oM_SD" id="2tzyNyms$sw" role="1PaTwD">
+              <property role="3oM_SC" value="Remember" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNyms$sy" role="1PaTwD">
+              <property role="3oM_SC" value="all" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNyms$s_" role="1PaTwD">
+              <property role="3oM_SC" value="right" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNyms$sD" role="1PaTwD">
+              <property role="3oM_SC" value="elements" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNyms$sI" role="1PaTwD">
+              <property role="3oM_SC" value="which" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNyms$sO" role="1PaTwD">
+              <property role="3oM_SC" value="form" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNyms$sV" role="1PaTwD">
+              <property role="3oM_SC" value="an" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNyms$t3" role="1PaTwD">
+              <property role="3oM_SC" value="unmatched" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNyms$tc" role="1PaTwD">
+              <property role="3oM_SC" value="prefix" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNyms$tm" role="1PaTwD">
+              <property role="3oM_SC" value="separately" />
+            </node>
+          </node>
+        </node>
+        <node concept="3cpWs8" id="2tzyNylSrjk" role="3cqZAp">
+          <node concept="3cpWsn" id="2tzyNylSrjl" role="3cpWs9">
+            <property role="TrG5h" value="rightListPrefix" />
+            <node concept="_YKpA" id="2tzyNylSrjm" role="1tU5fm">
+              <node concept="3uibUv" id="2tzyNylSrjn" role="_ZDj9">
+                <ref role="3uigEE" to="mhbf:~SNode" resolve="SNode" />
+              </node>
+            </node>
+            <node concept="2YIFZM" id="2tzyNylSrjo" role="33vP2m">
+              <ref role="1Pybhc" to="3o3z:~Lists" resolve="Lists" />
+              <ref role="37wK5l" to="3o3z:~Lists.newLinkedList()" resolve="newLinkedList" />
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbH" id="2tzyNymr3UI" role="3cqZAp" />
+        <node concept="3SKdUt" id="7ePFzsRM0j5" role="3cqZAp">
+          <node concept="1PaTwC" id="7ePFzsRM0j6" role="1aUNEU">
+            <node concept="3oM_SD" id="7ePFzsRM28Y" role="1PaTwD">
+              <property role="3oM_SC" value="if" />
+            </node>
+            <node concept="3oM_SD" id="7ePFzsRM290" role="1PaTwD">
+              <property role="3oM_SC" value="we" />
+            </node>
+            <node concept="3oM_SD" id="7ePFzsRM293" role="1PaTwD">
+              <property role="3oM_SC" value="have" />
+            </node>
+            <node concept="3oM_SD" id="7ePFzsRM297" role="1PaTwD">
+              <property role="3oM_SC" value="not" />
+            </node>
+            <node concept="3oM_SD" id="7ePFzsRM29c" role="1PaTwD">
+              <property role="3oM_SC" value="seen" />
+            </node>
+            <node concept="3oM_SD" id="7ePFzsRM29i" role="1PaTwD">
+              <property role="3oM_SC" value="a" />
+            </node>
+            <node concept="3oM_SD" id="7ePFzsRM29p" role="1PaTwD">
+              <property role="3oM_SC" value="match" />
+            </node>
+            <node concept="3oM_SD" id="7ePFzsRM29x" role="1PaTwD">
+              <property role="3oM_SC" value="before," />
+            </node>
+            <node concept="3oM_SD" id="7ePFzsRM4bF" role="1PaTwD">
+              <property role="3oM_SC" value="we" />
+            </node>
+            <node concept="3oM_SD" id="7ePFzsRM4bP" role="1PaTwD">
+              <property role="3oM_SC" value="must" />
+            </node>
+            <node concept="3oM_SD" id="7ePFzsRM4c0" role="1PaTwD">
+              <property role="3oM_SC" value="memorize" />
+            </node>
+            <node concept="3oM_SD" id="7ePFzsRM4cl" role="1PaTwD">
+              <property role="3oM_SC" value="the" />
+            </node>
+            <node concept="3oM_SD" id="7ePFzsRM4cy" role="1PaTwD">
+              <property role="3oM_SC" value="elements" />
+            </node>
+            <node concept="3oM_SD" id="7ePFzsRM4cK" role="1PaTwD">
+              <property role="3oM_SC" value="from" />
+            </node>
+            <node concept="3oM_SD" id="7ePFzsRM4cZ" role="1PaTwD">
+              <property role="3oM_SC" value="the" />
+            </node>
+            <node concept="3oM_SD" id="7ePFzsRM4df" role="1PaTwD">
+              <property role="3oM_SC" value="right" />
+            </node>
+            <node concept="3oM_SD" id="7ePFzsRM4dD" role="1PaTwD">
+              <property role="3oM_SC" value="list" />
+            </node>
+            <node concept="3oM_SD" id="7ePFzsRM4dV" role="1PaTwD">
+              <property role="3oM_SC" value="before" />
+            </node>
+            <node concept="3oM_SD" id="7ePFzsRM4fr" role="1PaTwD">
+              <property role="3oM_SC" value="equalRightElement" />
+            </node>
+            <node concept="3oM_SD" id="7ePFzsRM4ga" role="1PaTwD">
+              <property role="3oM_SC" value="separately" />
+            </node>
+            <node concept="3oM_SD" id="7ePFzsRMvUr" role="1PaTwD">
+              <property role="3oM_SC" value="to" />
+            </node>
+            <node concept="3oM_SD" id="7ePFzsRNi5b" role="1PaTwD">
+              <property role="3oM_SC" value="prioritize" />
+            </node>
+            <node concept="3oM_SD" id="7ePFzsRNkgV" role="1PaTwD">
+              <property role="3oM_SC" value="them" />
+            </node>
+            <node concept="3oM_SD" id="7ePFzsRNmfp" role="1PaTwD">
+              <property role="3oM_SC" value="in" />
+            </node>
+            <node concept="3oM_SD" id="7ePFzsRNmfN" role="1PaTwD">
+              <property role="3oM_SC" value="the" />
+            </node>
+            <node concept="3oM_SD" id="7ePFzsRMAHG" role="1PaTwD">
+              <property role="3oM_SC" value="merge" />
+            </node>
+          </node>
+        </node>
+        <node concept="3cpWs8" id="2tzyNympIN1" role="3cqZAp">
+          <node concept="3cpWsn" id="2tzyNympIN4" role="3cpWs9">
+            <property role="TrG5h" value="noMatchYet" />
+            <node concept="10P_77" id="2tzyNympIMZ" role="1tU5fm" />
+            <node concept="3clFbT" id="2tzyNympOKZ" role="33vP2m">
+              <property role="3clFbU" value="true" />
+            </node>
+          </node>
+        </node>
         <node concept="2Gpval" id="6IgrZARCPVm" role="3cqZAp">
           <node concept="2GrKxI" id="6IgrZARCPVo" role="2Gsz3X">
             <property role="TrG5h" value="leftElement" />
@@ -2052,100 +2200,631 @@
                 </node>
               </node>
             </node>
-            <node concept="3clFbJ" id="6IgrZARD16U" role="3cqZAp">
-              <node concept="3clFbS" id="6IgrZARD16W" role="3clFbx">
-                <node concept="3clFbF" id="6IgrZARD2dr" role="3cqZAp">
-                  <node concept="2OqwBi" id="6IgrZARD2_6" role="3clFbG">
-                    <node concept="2OqwBi" id="6IgrZARD2jX" role="2Oq$k0">
-                      <node concept="Xjq3P" id="6IgrZARD2dp" role="2Oq$k0" />
-                      <node concept="2OwXpG" id="6IgrZARD2sa" role="2OqNvi">
-                        <ref role="2Oxat5" node="6IgrZARCsJB" resolve="existsOnBothSides" />
+            <node concept="3clFbJ" id="7ePFzsRLgaS" role="3cqZAp">
+              <node concept="3clFbS" id="7ePFzsRLgaU" role="3clFbx">
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+                    <node concept="3oM_SD" id="5hEfjVnY7Ob" role="1PaTwD">
+                      <property role="3oM_SC" value="this" />
+                    </node>
+                    <node concept="3oM_SD" id="5hEfjVnYfeq" role="1PaTwD">
+                      <property role="3oM_SC" value="is" />
+                    </node>
+                    <node concept="3oM_SD" id="5hEfjVnYfet" role="1PaTwD">
+                      <property role="3oM_SC" value="the" />
+                    </node>
+                    <node concept="3oM_SD" id="5hEfjVnYfeE" role="1PaTwD">
+                      <property role="3oM_SC" value="first" />
+                    </node>
+                    <node concept="3oM_SD" id="5hEfjVnYff1" role="1PaTwD">
+                      <property role="3oM_SC" value="element" />
+                    </node>
+                    <node concept="3oM_SD" id="5hEfjVnYfg2" role="1PaTwD">
+                      <property role="3oM_SC" value="in" />
+                    </node>
+                    <node concept="3oM_SD" id="5hEfjVnYfgi" role="1PaTwD">
+                      <property role="3oM_SC" value="R" />
+                    </node>
+                    <node concept="3oM_SD" id="5hEfjVnYfgz" role="1PaTwD">
+                      <property role="3oM_SC" value="which" />
+                    </node>
+                    <node concept="3oM_SD" id="5hEfjVnYfgP" role="1PaTwD">
+                      <property role="3oM_SC" value="has" />
+                    </node>
+                    <node concept="3oM_SD" id="5hEfjVnYfh8" role="1PaTwD">
+                      <property role="3oM_SC" value="a" />
+                    </node>
+                    <node concept="3oM_SD" id="5hEfjVnYfhj" role="1PaTwD">
+                      <property role="3oM_SC" value="match" />
+                    </node>
+                    <node concept="3oM_SD" id="5hEfjVnYfhU" role="1PaTwD">
+                      <property role="3oM_SC" value="in" />
+                    </node>
+                    <node concept="3oM_SD" id="5hEfjVnYfig" role="1PaTwD">
+                      <property role="3oM_SC" value="L." />
+                    </node>
+                  </node>
+                </node>
+                <node concept="3cpWs8" id="5hEfjVnU3ol" role="3cqZAp">
+                  <node concept="3cpWsn" id="5hEfjVnU3om" role="3cpWs9">
+                    <property role="TrG5h" value="rightListFirstElemInLeft" />
+                    <node concept="3uibUv" id="5hEfjVnU2U6" role="1tU5fm">
+                      <ref role="3uigEE" to="mhbf:~SNode" resolve="SNode" />
+                    </node>
+                    <node concept="2OqwBi" id="5hEfjVnU3on" role="33vP2m">
+                      <node concept="37vLTw" id="5hEfjVnU3oo" role="2Oq$k0">
+                        <ref role="3cqZAo" node="6IgrZARCDoJ" resolve="rightList" />
+                      </node>
+                      <node concept="1z4cxt" id="5hEfjVnU3op" role="2OqNvi">
+                        <node concept="1bVj0M" id="5hEfjVnU3oq" role="23t8la">
+                          <node concept="3clFbS" id="5hEfjVnU3or" role="1bW5cS">
+                            <node concept="3clFbF" id="5hEfjVnU3os" role="3cqZAp">
+                              <node concept="2OqwBi" id="5hEfjVnU3ot" role="3clFbG">
+                                <node concept="37vLTw" id="5hEfjVnU3ou" role="2Oq$k0">
+                                  <ref role="3cqZAo" node="50eR6VkTWMK" resolve="leftChildren" />
+                                </node>
+                                <node concept="2HwmR7" id="5hEfjVnU3ov" role="2OqNvi">
+                                  <node concept="1bVj0M" id="5hEfjVnU3ow" role="23t8la">
+                                    <node concept="3clFbS" id="5hEfjVnU3ox" role="1bW5cS">
+                                      <node concept="3clFbF" id="5hEfjVnU3oy" role="3cqZAp">
+                                        <node concept="1rXfSq" id="5hEfjVnU3oz" role="3clFbG">
+                                          <ref role="37wK5l" node="1PFYlaN36CL" resolve="isSame" />
+                                          <node concept="37vLTw" id="5hEfjVnU3o$" role="37wK5m">
+                                            <ref role="3cqZAo" node="5hEfjVnU3oC" resolve="rcp" />
+                                          </node>
+                                          <node concept="37vLTw" id="5hEfjVnU3o_" role="37wK5m">
+                                            <ref role="3cqZAo" node="5hEfjVnU3oA" resolve="lc" />
+                                          </node>
+                                        </node>
+                                      </node>
+                                    </node>
+                                    <node concept="Rh6nW" id="5hEfjVnU3oA" role="1bW2Oz">
+                                      <property role="TrG5h" value="lc" />
+                                      <node concept="2jxLKc" id="5hEfjVnU3oB" role="1tU5fm" />
+                                    </node>
+                                  </node>
+                                </node>
+                              </node>
+                            </node>
+                          </node>
+                          <node concept="Rh6nW" id="5hEfjVnU3oC" role="1bW2Oz">
+                            <property role="TrG5h" value="rcp" />
+                            <node concept="2jxLKc" id="5hEfjVnU3oD" role="1tU5fm" />
+                          </node>
                         </node>
                       </node>
-                      <node concept="liA8E" id="6IgrZARD7gb" role="2OqNvi">
-                        <ref role="37wK5l" node="2siB1jiqYnw" resolve="merge" />
-                        <node concept="37vLTw" id="6IgrZARD7jN" role="37wK5m">
-                          <ref role="3cqZAo" node="50eR6VkTWMG" resolve="leftParent" />
+                    </node>
+                  </node>
+                </node>
+                <node concept="3cpWs8" id="5hEfjVnUG8h" role="3cqZAp">
+                  <node concept="3cpWsn" id="5hEfjVnUG8i" role="3cpWs9">
+                    <property role="TrG5h" value="leftBorder" />
+                    <node concept="10Oyi0" id="5hEfjVnUFxs" role="1tU5fm" />
+                    <node concept="2OqwBi" id="5hEfjVnUG8j" role="33vP2m">
+                      <node concept="37vLTw" id="5hEfjVnUG8k" role="2Oq$k0">
+                        <ref role="3cqZAo" node="6IgrZARCDoJ" resolve="rightList" />
+                      </node>
+                      <node concept="2WmjW8" id="5hEfjVnUG8l" role="2OqNvi">
+                        <node concept="37vLTw" id="5hEfjVnUG8m" role="25WWJ7">
+                          <ref role="3cqZAo" node="5hEfjVnU3om" resolve="rightListFirstElemInLeft" />
                         </node>
-                        <node concept="37vLTw" id="6IgrZARD7qJ" role="37wK5m">
-                          <ref role="3cqZAo" node="50eR6VkTWMI" resolve="rightParent" />
+                      </node>
+                    </node>
+                  </node>
+                </node>
+                <node concept="3clFbF" id="5hEfjVo3KTy" role="3cqZAp">
+                  <node concept="37vLTI" id="5hEfjVo3N4n" role="3clFbG">
+                    <node concept="3K4zz7" id="5hEfjVo3W7m" role="37vLTx">
+                      <node concept="37vLTw" id="5hEfjVo3Z5M" role="3K4E3e">
+                        <ref role="3cqZAo" node="5hEfjVnUG8i" resolve="leftBorder" />
+                      </node>
+                      <node concept="37vLTw" id="5hEfjVo40J9" role="3K4GZi">
+                        <ref role="3cqZAo" node="2tzyNylT7GP" resolve="indexOfLeftMatchInRight" />
+                      </node>
+                      <node concept="3eOSWO" id="5hEfjVo3TOG" role="3K4Cdx">
+                        <node concept="3cmrfG" id="5hEfjVo3TR$" role="3uHU7w">
+                          <property role="3cmrfH" value="-1" />
                         </node>
-                        <node concept="37vLTw" id="6IgrZARD7wN" role="37wK5m">
-                          <ref role="3cqZAo" node="6IgrZARCXP6" resolve="result" />
+                        <node concept="37vLTw" id="5hEfjVo3QT3" role="3uHU7B">
+                          <ref role="3cqZAo" node="5hEfjVnUG8i" resolve="leftBorder" />
                         </node>
-                        <node concept="2GrUjf" id="6IgrZARD7BZ" role="37wK5m">
-                          <ref role="2Gs0qQ" node="6IgrZARCPVo" resolve="leftElement" />
+                      </node>
+                    </node>
+                    <node concept="37vLTw" id="5hEfjVo3KTw" role="37vLTJ">
+                      <ref role="3cqZAo" node="5hEfjVnUG8i" resolve="leftBorder" />
+                    </node>
+                  </node>
+                </node>
+                <node concept="3SKdUt" id="5hEfjVnYflx" role="3cqZAp">
+                  <node concept="1PaTwC" id="5hEfjVnYfly" role="1aUNEU">
+                    <node concept="3oM_SD" id="5hEfjVnYiqX" role="1PaTwD">
+                      <property role="3oM_SC" value="The" />
+                    </node>
+                    <node concept="3oM_SD" id="5hEfjVnYiqZ" role="1PaTwD">
+                      <property role="3oM_SC" value="unmatched" />
+                    </node>
+                    <node concept="3oM_SD" id="5hEfjVnYirb" role="1PaTwD">
+                      <property role="3oM_SC" value="Prefix" />
+                    </node>
+                    <node concept="3oM_SD" id="5hEfjVnYirf" role="1PaTwD">
+                      <property role="3oM_SC" value="is" />
+                    </node>
+                    <node concept="3oM_SD" id="5hEfjVnYirk" role="1PaTwD">
+                      <property role="3oM_SC" value="the" />
+                    </node>
+                    <node concept="3oM_SD" id="5hEfjVnYirq" role="1PaTwD">
+                      <property role="3oM_SC" value="part" />
+                    </node>
+                    <node concept="3oM_SD" id="5hEfjVnYirx" role="1PaTwD">
+                      <property role="3oM_SC" value="of" />
+                    </node>
+                    <node concept="3oM_SD" id="5hEfjVnYirD" role="1PaTwD">
+                      <property role="3oM_SC" value="R" />
+                    </node>
+                    <node concept="3oM_SD" id="5hEfjVnYirM" role="1PaTwD">
+                      <property role="3oM_SC" value="to" />
+                    </node>
+                    <node concept="3oM_SD" id="5hEfjVnYirW" role="1PaTwD">
+                      <property role="3oM_SC" value="the" />
+                    </node>
+                    <node concept="3oM_SD" id="5hEfjVnYis7" role="1PaTwD">
+                      <property role="3oM_SC" value="left" />
+                    </node>
+                    <node concept="3oM_SD" id="5hEfjVnYisj" role="1PaTwD">
+                      <property role="3oM_SC" value="of" />
+                    </node>
+                    <node concept="3oM_SD" id="5hEfjVnYisw" role="1PaTwD">
+                      <property role="3oM_SC" value="'leftBorder'" />
+                    </node>
+                  </node>
+                </node>
+                <node concept="3clFbF" id="2tzyNylTuUz" role="3cqZAp">
+                  <node concept="2OqwBi" id="2tzyNylTwWl" role="3clFbG">
+                    <node concept="37vLTw" id="2tzyNylTuUx" role="2Oq$k0">
+                      <ref role="3cqZAo" node="2tzyNylSrjl" resolve="rightListPrefix" />
+                    </node>
+                    <node concept="X8dFx" id="2tzyNylTz0z" role="2OqNvi">
+                      <node concept="2OqwBi" id="2tzyNylTejO" role="25WWJ7">
+                        <node concept="37vLTw" id="2tzyNylTcdt" role="2Oq$k0">
+                          <ref role="3cqZAo" node="6IgrZARCDoJ" resolve="rightList" />
                         </node>
-                        <node concept="10Nm6u" id="6IgrZARD803" role="37wK5m" />
-                        <node concept="37vLTw" id="50eR6VkWvFn" role="37wK5m">
-                          <ref role="3cqZAo" node="50eR6VkTWMM" resolve="autoMergeOperation" />
+                        <node concept="3b24QK" id="2tzyNylThzm" role="2OqNvi">
+                          <node concept="3cmrfG" id="2tzyNylTj3S" role="3b24Rf">
+                            <property role="3cmrfH" value="0" />
+                          </node>
+                          <node concept="37vLTw" id="2tzyNylTkqX" role="3b24Re">
+                            <ref role="3cqZAo" node="5hEfjVnUG8i" resolve="leftBorder" />
+                          </node>
                         </node>
                       </node>
                     </node>
                   </node>
                 </node>
+                <node concept="3clFbF" id="2tzyNylTCkx" role="3cqZAp">
+                  <node concept="2OqwBi" id="2tzyNylTEGe" role="3clFbG">
+                    <node concept="37vLTw" id="2tzyNylTCkv" role="2Oq$k0">
+                      <ref role="3cqZAo" node="6IgrZARCDoJ" resolve="rightList" />
+                    </node>
+                    <node concept="1kEaZ2" id="2tzyNylTIbW" role="2OqNvi">
+                      <node concept="37vLTw" id="2tzyNylTJO7" role="25WWJ7">
+                        <ref role="3cqZAo" node="2tzyNylSrjl" resolve="rightListPrefix" />
+                      </node>
+                    </node>
+                  </node>
+                </node>
+              </node>
+              <node concept="37vLTw" id="2tzyNymq2oH" role="3clFbw">
+                <ref role="3cqZAo" node="2tzyNympIN4" resolve="noMatchYet" />
+              </node>
+            </node>
+            <node concept="3clFbF" id="7Q6gVCYmJkI" role="3cqZAp">
+              <node concept="2OqwBi" id="7Q6gVCYmKu5" role="3clFbG">
+                <node concept="37vLTw" id="7Q6gVCYmJkG" role="2Oq$k0">
+                  <ref role="3cqZAo" node="6IgrZARCDoJ" resolve="rightList" />
+                </node>
+                <node concept="3dhRuq" id="7Q6gVCYmL6a" role="2OqNvi">
+                  <node concept="37vLTw" id="7Q6gVCYmLe$" role="25WWJ7">
+                    <ref role="3cqZAo" node="7Q6gVCYmD_Z" resolve="equalRightElement" />
+                  </node>
+                </node>
               </node>
             </node>
           </node>
         </node>
+        <node concept="3clFbH" id="2tzyNylQwC8" role="3cqZAp" />
+        <node concept="3SKdUt" id="2tzyNymsASS" role="3cqZAp">
+          <node concept="1PaTwC" id="2tzyNymsAST" role="1aUNEU">
+            <node concept="3oM_SD" id="2tzyNymsCwB" role="1PaTwD">
+              <property role="3oM_SC" value="Do" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNymsCwD" role="1PaTwD">
+              <property role="3oM_SC" value="a" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNymsCwG" role="1PaTwD">
+              <property role="3oM_SC" value="separate" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNymsCwK" role="1PaTwD">
+              <property role="3oM_SC" value="merge" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNymsCwP" role="1PaTwD">
+              <property role="3oM_SC" value="for" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNymsCwV" role="1PaTwD">
+              <property role="3oM_SC" value="the" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNymsCx2" role="1PaTwD">
+              <property role="3oM_SC" value="right-prefix" />
+            </node>
+          </node>
+        </node>
+        <node concept="3cpWs8" id="2tzyNymllKK" role="3cqZAp">
+          <node concept="3cpWsn" id="2tzyNymllKL" role="3cpWs9">
+            <property role="TrG5h" value="resultPrefix" />
+            <node concept="_YKpA" id="2tzyNymllKM" role="1tU5fm">
+              <node concept="3Tqbb2" id="2tzyNymllKN" role="_ZDj9" />
+            </node>
+            <node concept="2YIFZM" id="2tzyNymllKO" role="33vP2m">
+              <ref role="1Pybhc" to="3o3z:~Lists" resolve="Lists" />
+              <ref role="37wK5l" to="3o3z:~Lists.newArrayList()" resolve="newArrayList" />
+            </node>
+          </node>
+        </node>
         <node concept="2Gpval" id="6IgrZARD8Jz" role="3cqZAp">
           <node concept="2GrKxI" id="6IgrZARD8J_" role="2Gsz3X">
             <property role="TrG5h" value="rightElementsOnlyRight" />
           </node>
           <node concept="37vLTw" id="6IgrZARDaeK" role="2GsD0m">
-            <ref role="3cqZAo" node="6IgrZARCDoJ" resolve="rightList" />
+            <ref role="3cqZAo" node="2tzyNylSrjl" resolve="rightListPrefix" />
           </node>
           <node concept="3clFbS" id="6IgrZARD8JD" role="2LFqv$">
             <node concept="3clFbF" id="6IgrZARDay0" role="3cqZAp">
@@ -2165,14 +2844,160 @@
                     <ref role="3cqZAo" node="50eR6VkTWMI" resolve="rightParent" />
                   </node>
                   <node concept="37vLTw" id="6IgrZARDblT" role="37wK5m">
-                    <ref role="3cqZAo" node="6IgrZARCXP6" resolve="result" />
+                    <ref role="3cqZAo" node="2tzyNymllKL" resolve="resultPrefix" />
                   </node>
                   <node concept="10Nm6u" id="6IgrZARDbsk" role="37wK5m" />
                   <node concept="2GrUjf" id="6IgrZARDcJa" role="37wK5m">
                     <ref role="2Gs0qQ" node="6IgrZARD8J_" resolve="rightElementsOnlyRight" />
                   </node>
                   <node concept="37vLTw" id="50eR6VkWwGg" role="37wK5m">
-                    <ref role="3cqZAo" node="50eR6VkTWMM" resolve="autoMergeOperation" />
+                    <ref role="3cqZAo" node="50eR6VkTWMM" resolve="recursiveMergeOperation" />
+                  </node>
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3SKdUt" id="2tzyNymsF67" role="3cqZAp">
+          <node concept="1PaTwC" id="2tzyNymsF68" role="1aUNEU">
+            <node concept="3oM_SD" id="2tzyNymsHb5" role="1PaTwD">
+              <property role="3oM_SC" value="Also" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNymsHb7" role="1PaTwD">
+              <property role="3oM_SC" value="add" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNymsHba" role="1PaTwD">
+              <property role="3oM_SC" value="the" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNymsHbe" role="1PaTwD">
+              <property role="3oM_SC" value="prefix" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNymsHbj" role="1PaTwD">
+              <property role="3oM_SC" value="to" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNymsHbp" role="1PaTwD">
+              <property role="3oM_SC" value="the" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNymsHbw" role="1PaTwD">
+              <property role="3oM_SC" value="front" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNymsHbC" role="1PaTwD">
+              <property role="3oM_SC" value="of" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNymsHbL" role="1PaTwD">
+              <property role="3oM_SC" value="the" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNymsHbV" role="1PaTwD">
+              <property role="3oM_SC" value="result" />
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbF" id="2tzyNymlTvE" role="3cqZAp">
+          <node concept="2OqwBi" id="2tzyNymlWRa" role="3clFbG">
+            <node concept="2OqwBi" id="5hEfjVnMNNg" role="2Oq$k0">
+              <node concept="37vLTw" id="2tzyNymlTvC" role="2Oq$k0">
+                <ref role="3cqZAo" node="2tzyNymllKL" resolve="resultPrefix" />
+              </node>
+              <node concept="35Qw8J" id="5hEfjVnMRJz" role="2OqNvi" />
+            </node>
+            <node concept="2es0OD" id="2tzyNymm0$F" role="2OqNvi">
+              <node concept="1bVj0M" id="2tzyNymm0$H" role="23t8la">
+                <node concept="3clFbS" id="2tzyNymm0$I" role="1bW5cS">
+                  <node concept="3clFbF" id="2tzyNymm2Mb" role="3cqZAp">
+                    <node concept="2OqwBi" id="2tzyNymm561" role="3clFbG">
+                      <node concept="37vLTw" id="2tzyNymm2Ma" role="2Oq$k0">
+                        <ref role="3cqZAo" node="6IgrZARCXP6" resolve="result" />
+                      </node>
+                      <node concept="2Ke4WJ" id="2tzyNymm91n" role="2OqNvi">
+                        <node concept="37vLTw" id="2tzyNymmaNg" role="25WWJ7">
+                          <ref role="3cqZAo" node="2tzyNymm0$J" resolve="it" />
+                        </node>
+                      </node>
+                    </node>
+                  </node>
+                </node>
+                <node concept="Rh6nW" id="2tzyNymm0$J" role="1bW2Oz">
+                  <property role="TrG5h" value="it" />
+                  <node concept="2jxLKc" id="2tzyNymm0$K" role="1tU5fm" />
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbH" id="2tzyNympD1L" role="3cqZAp" />
+        <node concept="3SKdUt" id="2tzyNymsJ$A" role="3cqZAp">
+          <node concept="1PaTwC" id="2tzyNymsJ$B" role="1aUNEU">
+            <node concept="3oM_SD" id="2tzyNymsLuI" role="1PaTwD">
+              <property role="3oM_SC" value="the" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNymsLuK" role="1PaTwD">
+              <property role="3oM_SC" value="remaining" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNymsLuN" role="1PaTwD">
+              <property role="3oM_SC" value="unmatched" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNymsLuR" role="1PaTwD">
+              <property role="3oM_SC" value="right" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNymsLuW" role="1PaTwD">
+              <property role="3oM_SC" value="elements" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNymsLv2" role="1PaTwD">
+              <property role="3oM_SC" value="got" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNymsLv9" role="1PaTwD">
+              <property role="3oM_SC" value="to" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNymsLvh" role="1PaTwD">
+              <property role="3oM_SC" value="the" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNymsLvq" role="1PaTwD">
+              <property role="3oM_SC" value="back" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNymsLvV" role="1PaTwD">
+              <property role="3oM_SC" value="of" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNymsLw6" role="1PaTwD">
+              <property role="3oM_SC" value="the" />
+            </node>
+            <node concept="3oM_SD" id="2tzyNymsLwi" role="1PaTwD">
+              <property role="3oM_SC" value="result" />
+            </node>
+          </node>
+        </node>
+        <node concept="2Gpval" id="2tzyNymlA43" role="3cqZAp">
+          <node concept="2GrKxI" id="2tzyNymlA44" role="2Gsz3X">
+            <property role="TrG5h" value="rightElementsOnlyRight" />
+          </node>
+          <node concept="37vLTw" id="2tzyNymlA45" role="2GsD0m">
+            <ref role="3cqZAo" node="6IgrZARCDoJ" resolve="rightList" />
+          </node>
+          <node concept="3clFbS" id="2tzyNymlA46" role="2LFqv$">
+            <node concept="3clFbF" id="2tzyNymlA47" role="3cqZAp">
+              <node concept="2OqwBi" id="2tzyNymlA48" role="3clFbG">
+                <node concept="2OqwBi" id="2tzyNymlA49" role="2Oq$k0">
+                  <node concept="Xjq3P" id="2tzyNymlA4a" role="2Oq$k0" />
+                  <node concept="2OwXpG" id="2tzyNymlA4b" role="2OqNvi">
+                    <ref role="2Oxat5" node="6IgrZARCsIA" resolve="newRight" />
+                  </node>
+                </node>
+                <node concept="liA8E" id="2tzyNymlA4c" role="2OqNvi">
+                  <ref role="37wK5l" node="2siB1jiqYnw" resolve="merge" />
+                  <node concept="37vLTw" id="2tzyNymlA4d" role="37wK5m">
+                    <ref role="3cqZAo" node="50eR6VkTWMG" resolve="leftParent" />
+                  </node>
+                  <node concept="37vLTw" id="2tzyNymlA4e" role="37wK5m">
+                    <ref role="3cqZAo" node="50eR6VkTWMI" resolve="rightParent" />
+                  </node>
+                  <node concept="37vLTw" id="2tzyNymlA4f" role="37wK5m">
+                    <ref role="3cqZAo" node="6IgrZARCXP6" resolve="result" />
+                  </node>
+                  <node concept="10Nm6u" id="2tzyNymlA4g" role="37wK5m" />
+                  <node concept="2GrUjf" id="2tzyNymlA4h" role="37wK5m">
+                    <ref role="2Gs0qQ" node="2tzyNymlA44" resolve="rightElementsOnlyRight" />
+                  </node>
+                  <node concept="37vLTw" id="2tzyNymlA4i" role="37wK5m">
+                    <ref role="3cqZAo" node="50eR6VkTWMM" resolve="recursiveMergeOperation" />
                   </node>
                 </node>
               </node>
@@ -2213,7 +3038,7 @@
         </node>
       </node>
       <node concept="37vLTG" id="50eR6VkTWMM" role="3clF46">
-        <property role="TrG5h" value="autoMergeOperation" />
+        <property role="TrG5h" value="recursiveMergeOperation" />
         <node concept="1ajhzC" id="50eR6VkTWMN" role="1tU5fm">
           <node concept="3uibUv" id="50eR6VkTWMO" role="1ajw0F">
             <ref role="3uigEE" to="mhbf:~SNode" resolve="SNode" />
@@ -2226,6 +3051,71 @@
           </node>
         </node>
       </node>
+      <node concept="P$JXv" id="7ePFzsRMqjF" role="lGtFl">
+        <node concept="TZ5HA" id="7ePFzsRMqjG" role="TZ5H$">
+          <node concept="1dT_AC" id="7ePFzsRMqjH" role="1dT_Ay">
+            <property role="1dT_AB" value="Perform a merge of the lists leftChildren and rightChildren by matching elements of both." />
+          </node>
+        </node>
+        <node concept="TZ5HA" id="7ePFzsRN6Wt" role="TZ5H$">
+          <node concept="1dT_AC" id="7ePFzsRN6Wu" role="1dT_Ay">
+            <property role="1dT_AB" value="Unmatched elements from rightChildren, left to the first matched element, are prepended." />
+          </node>
+        </node>
+        <node concept="TZ5HA" id="4Prn4KOL9kr" role="TZ5H$">
+          <node concept="1dT_AC" id="4Prn4KOL9ks" role="1dT_Ay">
+            <property role="1dT_AB" value="Unmatched elements from rightChildren, right to the last matched element, are added as suffix." />
+          </node>
+        </node>
+        <node concept="TZ5HA" id="7ePFzsRN8Ta" role="TZ5H$">
+          <node concept="1dT_AC" id="7ePFzsRN8Tb" role="1dT_Ay">
+            <property role="1dT_AB" value="" />
+          </node>
+        </node>
+        <node concept="TZ5HA" id="7ePFzsRNaPy" role="TZ5H$">
+          <node concept="1dT_AC" id="7ePFzsRNaPz" role="1dT_Ay">
+            <property role="1dT_AB" value="Example where left elements are dropped, right elements kept:" />
+          </node>
+        </node>
+        <node concept="TZ5HA" id="7ePFzsRNcR3" role="TZ5H$">
+          <node concept="1dT_AC" id="7ePFzsRNcR4" role="1dT_Ay">
+            <property role="1dT_AB" value=" L = [B, C, D, F], R = [A, B, C, F, G] ==&gt; result = [A, B, C, F, G]" />
+          </node>
+        </node>
+        <node concept="TUZQ0" id="7ePFzsRMqjI" role="3nqlJM">
+          <property role="TUZQ4" value="currently ignored" />
+          <node concept="zr_55" id="7ePFzsRMqjK" role="zr_5Q">
+            <ref role="zr_51" node="50eR6VkTWMG" resolve="leftParent" />
+          </node>
+        </node>
+        <node concept="TUZQ0" id="7ePFzsRMqjL" role="3nqlJM">
+          <property role="TUZQ4" value="currently ignored" />
+          <node concept="zr_55" id="7ePFzsRMqjN" role="zr_5Q">
+            <ref role="zr_51" node="50eR6VkTWMI" resolve="rightParent" />
+          </node>
+        </node>
+        <node concept="TUZQ0" id="7ePFzsRMqjO" role="3nqlJM">
+          <property role="TUZQ4" value="list of children from the left side" />
+          <node concept="zr_55" id="7ePFzsRMqjQ" role="zr_5Q">
+            <ref role="zr_51" node="50eR6VkTWMK" resolve="leftChildren" />
+          </node>
+        </node>
+        <node concept="TUZQ0" id="7ePFzsRMqjR" role="3nqlJM">
+          <property role="TUZQ4" value="list of children from the right side" />
+          <node concept="zr_55" id="7ePFzsRMqjT" role="zr_5Q">
+            <ref role="zr_51" node="77Ot_59WR17" resolve="rightChildren" />
+          </node>
+        </node>
+        <node concept="TUZQ0" id="7ePFzsRMqjU" role="3nqlJM">
+          <property role="TUZQ4" value=" merge operation which can be applied to two nodes, where node-specific merge-policy is retrieved" />
+          <node concept="zr_55" id="7ePFzsRMqjW" role="zr_5Q">
+            <ref role="zr_51" node="50eR6VkTWMM" resolve="recursiveMergeOperation" />
+          </node>
+        </node>
+        <node concept="x79VA" id="7ePFzsRMqjX" role="3nqlJM">
+          <property role="x79VB" value="the list of merged elements" />
+        </node>
+      </node>
     </node>
     <node concept="2tJIrI" id="50eR6VkJwJR" role="jymVt" />
     <node concept="3clFb_" id="6IgrZARCviQ" role="jymVt">
@@ -5984,12 +6874,12 @@
             <node concept="1pGfFk" id="7L127H0bQ0j" role="2ShVmc">
               <ref role="37wK5l" node="5ahhjncnFY_" resolve="MergedNode" />
               <node concept="2OqwBi" id="7L127H0bQ0k" role="37wK5m">
-                <node concept="37vLTw" id="7L127H0bQ0l" role="2Oq$k0">
-                  <ref role="3cqZAo" node="7L127H0bPZz" resolve="leftNode" />
-                </node>
                 <node concept="liA8E" id="7L127H0bQ0m" role="2OqNvi">
                   <ref role="37wK5l" to="mhbf:~SNode.getContainmentLink()" resolve="getContainmentLink" />
                 </node>
+                <node concept="37vLTw" id="7L127H0bQ0l" role="2Oq$k0">
+                  <ref role="3cqZAo" node="7L127H0bPZz" resolve="leftNode" />
+                </node>
               </node>
               <node concept="37vLTw" id="hG_e7AsVr0" role="37wK5m">
                 <ref role="3cqZAo" node="7L127H0bPZF" resolve="newInstance" />
@@ -9872,15 +10762,15 @@
                   <ref role="3cqZAo" node="1FQTM0rPUiS" resolve="success" />
                 </node>
                 <node concept="3cpWs3" id="1FQTM0rPUj0" role="1gVpfI">
+                  <node concept="Xl_RD" id="1FQTM0rPUj2" role="3uHU7B">
+                    <property role="Xl_RC" value="Could not remove " />
+                  </node>
                   <node concept="2OqwBi" id="43D1npLykMq" role="3uHU7w">
                     <node concept="2GrUjf" id="1FQTM0rPUj1" role="2Oq$k0">
                       <ref role="2Gs0qQ" node="1FQTM0rPUiC" resolve="propertyId" />
                     </node>
                     <node concept="2Iv5rx" id="43D1npLykMr" role="2OqNvi" />
                   </node>
-                  <node concept="Xl_RD" id="1FQTM0rPUj2" role="3uHU7B">
-                    <property role="Xl_RC" value="Could not remove " />
-                  </node>
                 </node>
               </node>
             </node>
@@ -9947,15 +10837,15 @@
                   <ref role="3cqZAo" node="1FQTM0rPUjl" resolve="success" />
                 </node>
                 <node concept="3cpWs3" id="1FQTM0rPUjt" role="1gVpfI">
+                  <node concept="Xl_RD" id="1FQTM0rPUjv" role="3uHU7B">
+                    <property role="Xl_RC" value="Could Not Remove " />
+                  </node>
                   <node concept="2OqwBi" id="43D1npLykOg" role="3uHU7w">
                     <node concept="2GrUjf" id="1FQTM0rPUju" role="2Oq$k0">
                       <ref role="2Gs0qQ" node="1FQTM0rPUj5" resolve="link" />
                     </node>
                     <node concept="2Iv5rx" id="43D1npLykOh" role="2OqNvi" />
                   </node>
-                  <node concept="Xl_RD" id="1FQTM0rPUjv" role="3uHU7B">
-                    <property role="Xl_RC" value="Could Not Remove " />
-                  </node>
                 </node>
               </node>
             </node>
@@ -10022,15 +10912,15 @@
                   <ref role="3cqZAo" node="3PLTv5jSYZL" resolve="success" />
                 </node>
                 <node concept="3cpWs3" id="3PLTv5jSYZU" role="1gVpfI">
+                  <node concept="Xl_RD" id="3PLTv5jSYZW" role="3uHU7B">
+                    <property role="Xl_RC" value="Could Not Remove " />
+                  </node>
                   <node concept="2OqwBi" id="43D1npLykQ6" role="3uHU7w">
                     <node concept="2GrUjf" id="3PLTv5jSYZV" role="2Oq$k0">
                       <ref role="2Gs0qQ" node="3PLTv5jSYZx" resolve="link" />
                     </node>
                     <node concept="2Iv5rx" id="43D1npLykQ7" role="2OqNvi" />
                   </node>
-                  <node concept="Xl_RD" id="3PLTv5jSYZW" role="3uHU7B">
-                    <property role="Xl_RC" value="Could Not Remove " />
-                  </node>
                 </node>
               </node>
             </node>
@@ -15356,6 +16246,7 @@
     <node concept="2tJIrI" id="4LLXBGadNZT" role="jymVt" />
     <node concept="2YIFZL" id="2cYlIwYLAEx" role="jymVt">
       <property role="TrG5h" value="run" />
+      <node concept="3Tm1VV" id="4LLXBGadN7h" role="1B3o_S" />
       <node concept="3cqZAl" id="2cYlIwYLAEz" role="3clF45" />
       <node concept="37vLTG" id="2cYlIwYLAEj" role="3clF46">
         <property role="TrG5h" value="smodelL" />
@@ -15493,7 +16384,6 @@
           </node>
         </node>
       </node>
-      <node concept="3Tm1VV" id="4LLXBGadN7h" role="1B3o_S" />
     </node>
     <node concept="2tJIrI" id="2cYlIwYDfFO" role="jymVt" />
     <node concept="2YIFZL" id="2cYlIwYEMiU" role="jymVt">
diff --git a/code/solutions/de.itemis.model.merge.test/de.itemis.model.merge.test.msd b/code/solutions/de.itemis.model.merge.test/de.itemis.model.merge.test.msd
index 1d499cc57..c65ee5dcc 100644
--- a/code/solutions/de.itemis.model.merge.test/de.itemis.model.merge.test.msd
+++ b/code/solutions/de.itemis.model.merge.test/de.itemis.model.merge.test.msd
@@ -21,9 +21,14 @@
     <dependency reexport="false">c72da2b9-7cce-4447-8389-f407dc1158b7(jetbrains.mps.lang.structure)</dependency>
     <dependency reexport="false">aa8cbd62-5e1f-4d0b-a6e2-189711774c91(de.itemis.model.merge.runtime)</dependency>
     <dependency reexport="false">e50b0500-6fd7-4c7f-a730-9d841358ca2b(de.itemis.model.simple.demo.property)</dependency>
+    <dependency reexport="false">d119cd03-ed7e-477f-adb6-22a3d2e6ea77(test.de.itemis.mps.modelmerger.testlanguage)</dependency>
+    <dependency reexport="false">6ed54515-acc8-4d1e-a16c-9fd6cfe951ea(MPS.Core)</dependency>
+    <dependency reexport="false">17d34773-aaeb-4315-92e6-9e0314373a68(de.itemis.model.merge.baselang.sandbox)</dependency>
+    <dependency reexport="false">ceab5195-25ea-4f22-9b92-103b95ca8c0c(jetbrains.mps.lang.core)</dependency>
   </dependencies>
   <languageVersions>
     <language slang="l:539e8939-08ef-497c-a5fd-25dd10137a55:de.itemis.model.merge" version="0" />
+    <language slang="l:9343567c-db05-48c8-bba6-fdc3f5c1b3c0:de.itemis.model.merge.baselang" version="0" />
     <language slang="l:0ef84c01-bf36-41ed-9882-d7b70a4a4eba:de.itemis.model.merge.diamond" version="0" />
     <language slang="l:81362899-970b-421b-9fe3-2b64b343f769:de.itemis.model.simple.demo.property" version="0" />
     <language slang="l:e50b0500-6fd7-4c7f-a730-9d841358ca2b:de.itemis.model.simple.demo.property" version="0" />
@@ -39,6 +44,7 @@
     <language slang="l:7866978e-a0f0-4cc7-81bc-4d213d9375e1:jetbrains.mps.lang.smodel" version="19" />
     <language slang="l:8585453e-6bfb-4d80-98de-b16074f1d86c:jetbrains.mps.lang.test" version="5" />
     <language slang="l:9ded098b-ad6a-4657-bfd9-48636cfe8bc3:jetbrains.mps.lang.traceable" version="0" />
+    <language slang="l:d119cd03-ed7e-477f-adb6-22a3d2e6ea77:test.de.itemis.mps.modelmerger.testlanguage" version="0" />
   </languageVersions>
   <dependencyVersions>
     <module reference="3f233e7f-b8a6-46d2-a57f-795d56775243(Annotations)" version="0" />
@@ -46,6 +52,7 @@
     <module reference="6ed54515-acc8-4d1e-a16c-9fd6cfe951ea(MPS.Core)" version="0" />
     <module reference="8865b7a8-5271-43d3-884c-6fd1d9cfdd34(MPS.OpenAPI)" version="0" />
     <module reference="539e8939-08ef-497c-a5fd-25dd10137a55(de.itemis.model.merge)" version="0" />
+    <module reference="17d34773-aaeb-4315-92e6-9e0314373a68(de.itemis.model.merge.baselang.sandbox)" version="0" />
     <module reference="0ef84c01-bf36-41ed-9882-d7b70a4a4eba(de.itemis.model.merge.diamond)" version="0" />
     <module reference="aa8cbd62-5e1f-4d0b-a6e2-189711774c91(de.itemis.model.merge.runtime)" version="0" />
     <module reference="cb29f2d3-8375-4a4d-bc96-278c6b7ca172(de.itemis.model.merge.test)" version="0" />
@@ -60,6 +67,7 @@
     <module reference="d7eb0a2a-bd50-4576-beae-e4a89db35f20(jetbrains.mps.lang.scopes.runtime)" version="0" />
     <module reference="c72da2b9-7cce-4447-8389-f407dc1158b7(jetbrains.mps.lang.structure)" version="0" />
     <module reference="9ded098b-ad6a-4657-bfd9-48636cfe8bc3(jetbrains.mps.lang.traceable)" version="0" />
+    <module reference="d119cd03-ed7e-477f-adb6-22a3d2e6ea77(test.de.itemis.mps.modelmerger.testlanguage)" version="0" />
   </dependencyVersions>
 </solution>
 
diff --git a/code/solutions/de.itemis.model.merge.test/models/de.itemis.model.merge.test.gen@tests.mps b/code/solutions/de.itemis.model.merge.test/models/de.itemis.model.merge.test.gen@tests.mps
index 997fa2a8d..48d49493d 100644
--- a/code/solutions/de.itemis.model.merge.test/models/de.itemis.model.merge.test.gen@tests.mps
+++ b/code/solutions/de.itemis.model.merge.test/models/de.itemis.model.merge.test.gen@tests.mps
@@ -8,6 +8,8 @@
     <use id="0ef84c01-bf36-41ed-9882-d7b70a4a4eba" name="de.itemis.model.merge.diamond" version="0" />
     <use id="7866978e-a0f0-4cc7-81bc-4d213d9375e1" name="jetbrains.mps.lang.smodel" version="19" />
     <use id="f3061a53-9226-4cc5-a443-f952ceaf5816" name="jetbrains.mps.baseLanguage" version="12" />
+    <use id="9343567c-db05-48c8-bba6-fdc3f5c1b3c0" name="de.itemis.model.merge.baselang" version="0" />
+    <use id="d119cd03-ed7e-477f-adb6-22a3d2e6ea77" name="test.de.itemis.mps.modelmerger.testlanguage" version="0" />
   </languages>
   <imports>
     <import index="14sb" ref="r:798bef3e-3867-4aab-a0a7-1e9776b7e479(de.itemis.model.merge.diamond.structure)" />
@@ -17,9 +19,22 @@
     <import index="gunp" ref="r:a4055897-4d16-4474-96e9-a78cf2abfe5a(de.itemis.model.merge.runtime.runtime)" />
     <import index="7nif" ref="r:22d5ba92-fa22-4a5b-b205-e5aacdecefa4(de.itemis.model.merge.test.util)" />
     <import index="33ny" ref="6354ebe7-c22a-4a0f-ac54-50b52ab9b065/java:java.util(JDK/)" />
+    <import index="tqvn" ref="6ed54515-acc8-4d1e-a16c-9fd6cfe951ea/java:jetbrains.mps.smodel.tempmodel(MPS.Core/)" />
+    <import index="rkwz" ref="r:ad43588a-311a-46ff-a2ec-5f0fed1527d9(de.itemis.model.merge.test.plugin)" />
+    <import index="mhbf" ref="8865b7a8-5271-43d3-884c-6fd1d9cfdd34/java:org.jetbrains.mps.openapi.model(MPS.OpenAPI/)" />
+    <import index="tpck" ref="r:00000000-0000-4000-0000-011c89590288(jetbrains.mps.lang.core.structure)" />
+    <import index="z1c3" ref="6ed54515-acc8-4d1e-a16c-9fd6cfe951ea/java:jetbrains.mps.project(MPS.Core/)" />
+    <import index="lui2" ref="8865b7a8-5271-43d3-884c-6fd1d9cfdd34/java:org.jetbrains.mps.openapi.module(MPS.OpenAPI/)" />
+    <import index="mopj" ref="r:58892eeb-9059-4684-af0a-e0f5f7f9800d(de.itemis.model.merge.structure)" />
+    <import index="k6li" ref="r:7c40b043-67ab-4fff-a68c-bb3e633629e4(test.de.itemis.mps.modelmerger.testlanguage.structure)" />
+    <import index="da0s" ref="r:c5ef02fd-fc0b-460a-bea5-97c4d7c6c4cf(de.itemis.model.merge.baselang.sandbox)" />
   </imports>
   <registry>
     <language id="8585453e-6bfb-4d80-98de-b16074f1d86c" name="jetbrains.mps.lang.test">
+      <concept id="1211979288880" name="jetbrains.mps.lang.test.structure.AssertMatch" flags="nn" index="JA50E">
+        <child id="1211979305365" name="before" index="JA92f" />
+        <child id="1211979322383" name="after" index="JAdkl" />
+      </concept>
       <concept id="5097124989038916362" name="jetbrains.mps.lang.test.structure.TestInfo" flags="ng" index="2XOHcx">
         <property id="5097124989038916363" name="projectPath" index="2XOHcw" />
       </concept>
@@ -37,9 +52,17 @@
       </concept>
       <concept id="1225978065297" name="jetbrains.mps.lang.test.structure.SimpleNodeTest" flags="ng" index="1LZb2c" />
     </language>
+    <language id="9343567c-db05-48c8-bba6-fdc3f5c1b3c0" name="de.itemis.model.merge.baselang">
+      <concept id="5951366741878103073" name="de.itemis.model.merge.baselang.structure.ModelMergerExpression" flags="ng" index="1N85M$">
+        <child id="5951366741878918075" name="left" index="1NkWGY" />
+        <child id="5951366741878918812" name="modelMerge" index="1NkWSp" />
+        <child id="5951366741878918809" name="right" index="1NkWSs" />
+      </concept>
+    </language>
     <language id="f3061a53-9226-4cc5-a443-f952ceaf5816" name="jetbrains.mps.baseLanguage">
       <concept id="4836112446988635817" name="jetbrains.mps.baseLanguage.structure.UndefinedType" flags="in" index="2jxLKc" />
       <concept id="1202948039474" name="jetbrains.mps.baseLanguage.structure.InstanceMethodCallOperation" flags="nn" index="liA8E" />
+      <concept id="1465982738277781862" name="jetbrains.mps.baseLanguage.structure.PlaceholderMember" flags="nn" index="2tJIrI" />
       <concept id="1154032098014" name="jetbrains.mps.baseLanguage.structure.AbstractLoopStatement" flags="nn" index="2LF5Ji">
         <child id="1154032183016" name="body" index="2LFqv$" />
       </concept>
@@ -50,9 +73,15 @@
       <concept id="1070475926800" name="jetbrains.mps.baseLanguage.structure.StringLiteral" flags="nn" index="Xl_RD">
         <property id="1070475926801" name="value" index="Xl_RC" />
       </concept>
+      <concept id="1081236700938" name="jetbrains.mps.baseLanguage.structure.StaticMethodDeclaration" flags="ig" index="2YIFZL" />
       <concept id="1081236700937" name="jetbrains.mps.baseLanguage.structure.StaticMethodCall" flags="nn" index="2YIFZM">
         <reference id="1144433194310" name="classConcept" index="1Pybhc" />
       </concept>
+      <concept id="1070534934090" name="jetbrains.mps.baseLanguage.structure.CastExpression" flags="nn" index="10QFUN">
+        <child id="1070534934091" name="type" index="10QFUM" />
+        <child id="1070534934092" name="expression" index="10QFUP" />
+      </concept>
+      <concept id="1068390468198" name="jetbrains.mps.baseLanguage.structure.ClassConcept" flags="ig" index="312cEu" />
       <concept id="1068431474542" name="jetbrains.mps.baseLanguage.structure.VariableDeclaration" flags="ng" index="33uBYm">
         <child id="1068431790190" name="initializer" index="33vP2m" />
       </concept>
@@ -61,6 +90,7 @@
       </concept>
       <concept id="1068498886292" name="jetbrains.mps.baseLanguage.structure.ParameterDeclaration" flags="ir" index="37vLTG" />
       <concept id="1225271177708" name="jetbrains.mps.baseLanguage.structure.StringType" flags="in" index="17QB3L" />
+      <concept id="1225271283259" name="jetbrains.mps.baseLanguage.structure.NPEEqualsExpression" flags="nn" index="17R0WA" />
       <concept id="4972933694980447171" name="jetbrains.mps.baseLanguage.structure.BaseVariableDeclaration" flags="ng" index="19Szcq">
         <child id="5680397130376446158" name="type" index="1tU5fm" />
       </concept>
@@ -77,6 +107,7 @@
       <concept id="1068580123136" name="jetbrains.mps.baseLanguage.structure.StatementList" flags="sn" stub="5293379017992965193" index="3clFbS">
         <child id="1068581517665" name="statement" index="3cqZAp" />
       </concept>
+      <concept id="1068580123137" name="jetbrains.mps.baseLanguage.structure.BooleanConstant" flags="nn" index="3clFbT" />
       <concept id="1068580320020" name="jetbrains.mps.baseLanguage.structure.IntegerConstant" flags="nn" index="3cmrfG">
         <property id="1068580320021" name="value" index="3cmrfH" />
       </concept>
@@ -89,6 +120,9 @@
       </concept>
       <concept id="1068581242863" name="jetbrains.mps.baseLanguage.structure.LocalVariableDeclaration" flags="nr" index="3cpWsn" />
       <concept id="1068581517677" name="jetbrains.mps.baseLanguage.structure.VoidType" flags="in" index="3cqZAl" />
+      <concept id="1079359253375" name="jetbrains.mps.baseLanguage.structure.ParenthesizedExpression" flags="nn" index="1eOMI4">
+        <child id="1079359253376" name="expression" index="1eOMHV" />
+      </concept>
       <concept id="1160998861373" name="jetbrains.mps.baseLanguage.structure.AssertStatement" flags="nn" index="1gVbGN">
         <child id="1160998896846" name="condition" index="1gVkn0" />
         <child id="1160998916832" name="message" index="1gVpfI" />
@@ -97,6 +131,9 @@
         <reference id="1068499141037" name="baseMethodDeclaration" index="37wK5l" />
         <child id="1068499141038" name="actualArgument" index="37wK5m" />
       </concept>
+      <concept id="1107461130800" name="jetbrains.mps.baseLanguage.structure.Classifier" flags="ng" index="3pOWGL">
+        <child id="5375687026011219971" name="member" index="jymVt" unordered="true" />
+      </concept>
       <concept id="1107535904670" name="jetbrains.mps.baseLanguage.structure.ClassifierType" flags="in" index="3uibUv">
         <reference id="1107535924139" name="classifier" index="3uigEE" />
       </concept>
@@ -107,6 +144,10 @@
       <concept id="1178549954367" name="jetbrains.mps.baseLanguage.structure.IVisible" flags="ng" index="1B3ioH">
         <child id="1178549979242" name="visibility" index="1B3o_S" />
       </concept>
+      <concept id="6329021646629104954" name="jetbrains.mps.baseLanguage.structure.SingleLineComment" flags="nn" index="3SKdUt">
+        <child id="8356039341262087992" name="line" index="1aUNEU" />
+      </concept>
+      <concept id="1146644602865" name="jetbrains.mps.baseLanguage.structure.PublicVisibility" flags="nn" index="3Tm1VV" />
       <concept id="1146644623116" name="jetbrains.mps.baseLanguage.structure.PrivateVisibility" flags="nn" index="3Tm6S6" />
     </language>
     <language id="0ef84c01-bf36-41ed-9882-d7b70a4a4eba" name="de.itemis.model.merge.diamond">
@@ -148,6 +189,19 @@
         <child id="1205770614681" name="actualArgument" index="2XxRq1" />
       </concept>
     </language>
+    <language id="d119cd03-ed7e-477f-adb6-22a3d2e6ea77" name="test.de.itemis.mps.modelmerger.testlanguage">
+      <concept id="5932312848598554099" name="test.de.itemis.mps.modelmerger.testlanguage.structure.tSystem" flags="ng" index="2Ro1FD">
+        <child id="5932312848598554102" name="inports" index="2Ro1FG" />
+      </concept>
+      <concept id="5932312848598539787" name="test.de.itemis.mps.modelmerger.testlanguage.structure.tInPort" flags="ng" index="2Ro54h">
+        <property id="5932312848598539790" name="value" index="2Ro54k" />
+      </concept>
+    </language>
+    <language id="446c26eb-2b7b-4bf0-9b35-f83fa582753e" name="jetbrains.mps.lang.modelapi">
+      <concept id="4733039728785194814" name="jetbrains.mps.lang.modelapi.structure.NamedNodeReference" flags="ng" index="ZC_QK">
+        <reference id="7256306938026143658" name="target" index="2aWVGs" />
+      </concept>
+    </language>
     <language id="f61473f9-130f-42f6-b98d-6c438812c2f6" name="jetbrains.mps.baseLanguage.unitTest">
       <concept id="7080278351417106679" name="jetbrains.mps.baseLanguage.unitTest.structure.AssertIsNotNull" flags="nn" index="2Hmddi">
         <child id="7080278351417106681" name="expression" index="2Hmdds" />
@@ -160,16 +214,41 @@
       <concept id="1172028177041" name="jetbrains.mps.baseLanguage.unitTest.structure.AssertIsNull" flags="nn" index="3ykFI1">
         <child id="1172028236559" name="expression" index="3ykU8v" />
       </concept>
+      <concept id="1172073500303" name="jetbrains.mps.baseLanguage.unitTest.structure.Message" flags="ng" index="3_1$Yv">
+        <child id="1172073511101" name="message" index="3_1BAH" />
+      </concept>
+      <concept id="1172075514136" name="jetbrains.mps.baseLanguage.unitTest.structure.MessageHolder" flags="ng" index="3_9gw8">
+        <child id="1172075534298" name="message" index="3_9lra" />
+      </concept>
     </language>
     <language id="7866978e-a0f0-4cc7-81bc-4d213d9375e1" name="jetbrains.mps.lang.smodel">
+      <concept id="1179168000618" name="jetbrains.mps.lang.smodel.structure.Node_GetIndexInParentOperation" flags="nn" index="2bSWHS" />
       <concept id="1177026924588" name="jetbrains.mps.lang.smodel.structure.RefConcept_Reference" flags="nn" index="chp4Y">
         <reference id="1177026940964" name="conceptDeclaration" index="cht4Q" />
       </concept>
+      <concept id="7400021826771268254" name="jetbrains.mps.lang.smodel.structure.SNodePointerType" flags="ig" index="2sp9CU">
+        <reference id="7400021826771268269" name="concept" index="2sp9C9" />
+      </concept>
+      <concept id="7400021826774799413" name="jetbrains.mps.lang.smodel.structure.NodePointerExpression" flags="ng" index="2tJFMh">
+        <child id="7400021826774799510" name="ref" index="2tJFKM" />
+      </concept>
+      <concept id="4065387505485742749" name="jetbrains.mps.lang.smodel.structure.AbstractPointerResolveOperation" flags="ng" index="2yCiFS">
+        <child id="3648723375513868575" name="repositoryArg" index="Vysub" />
+      </concept>
       <concept id="7453996997717780434" name="jetbrains.mps.lang.smodel.structure.Node_GetSConceptOperation" flags="nn" index="2yIwOk" />
       <concept id="2396822768958367367" name="jetbrains.mps.lang.smodel.structure.AbstractTypeCastExpression" flags="nn" index="$5XWr">
         <child id="6733348108486823193" name="leftExpression" index="1m5AlR" />
         <child id="3906496115198199033" name="conceptArgument" index="3oSUPX" />
       </concept>
+      <concept id="1143226024141" name="jetbrains.mps.lang.smodel.structure.SModelType" flags="in" index="H_c77" />
+      <concept id="1145383075378" name="jetbrains.mps.lang.smodel.structure.SNodeListType" flags="in" index="2I9FWS">
+        <reference id="1145383142433" name="elementConcept" index="2I9WkF" />
+      </concept>
+      <concept id="1145404486709" name="jetbrains.mps.lang.smodel.structure.SemanticDowncastExpression" flags="nn" index="2JrnkZ">
+        <child id="1145404616321" name="leftExpression" index="2JrQYb" />
+      </concept>
+      <concept id="1171315804604" name="jetbrains.mps.lang.smodel.structure.Model_RootsOperation" flags="nn" index="2RRcyG" />
+      <concept id="3648723375513868532" name="jetbrains.mps.lang.smodel.structure.NodePointer_ResolveOperation" flags="ng" index="Vyspw" />
       <concept id="2644386474302386080" name="jetbrains.mps.lang.smodel.structure.PropertyIdRefExpression" flags="nn" index="355D3s">
         <reference id="2644386474302386081" name="conceptDeclaration" index="355D3t" />
         <reference id="2644386474302386082" name="propertyDeclaration" index="355D3u" />
@@ -194,15 +273,27 @@
       <concept id="1138056143562" name="jetbrains.mps.lang.smodel.structure.SLinkAccess" flags="nn" index="3TrEf2">
         <reference id="1138056516764" name="link" index="3Tt5mk" />
       </concept>
+      <concept id="1138056282393" name="jetbrains.mps.lang.smodel.structure.SLinkListAccess" flags="nn" index="3Tsc0h">
+        <reference id="1138056546658" name="link" index="3TtcxE" />
+      </concept>
     </language>
     <language id="ceab5195-25ea-4f22-9b92-103b95ca8c0c" name="jetbrains.mps.lang.core">
       <concept id="1133920641626" name="jetbrains.mps.lang.core.structure.BaseConcept" flags="ng" index="2VYdi">
+        <property id="1193676396447" name="virtualPackage" index="3GE5qa" />
         <child id="5169995583184591170" name="smodelAttribute" index="lGtFl" />
       </concept>
       <concept id="1169194658468" name="jetbrains.mps.lang.core.structure.INamedConcept" flags="ng" index="TrEIO">
         <property id="1169194664001" name="name" index="TrG5h" />
       </concept>
     </language>
+    <language id="c7fb639f-be78-4307-89b0-b5959c3fa8c8" name="jetbrains.mps.lang.text">
+      <concept id="155656958578482948" name="jetbrains.mps.lang.text.structure.Word" flags="nn" index="3oM_SD">
+        <property id="155656958578482949" name="value" index="3oM_SC" />
+      </concept>
+      <concept id="2535923850359271782" name="jetbrains.mps.lang.text.structure.Line" flags="nn" index="1PaTwC">
+        <child id="2535923850359271783" name="elements" index="1PaTwD" />
+      </concept>
+    </language>
     <language id="83888646-71ce-4f1c-9c53-c54016f6ad4f" name="jetbrains.mps.baseLanguage.collections">
       <concept id="1204796164442" name="jetbrains.mps.baseLanguage.collections.structure.InternalSequenceOperation" flags="nn" index="23sCx2">
         <child id="1204796294226" name="closure" index="23t8la" />
@@ -225,6 +316,7 @@
       <concept id="1160612413312" name="jetbrains.mps.baseLanguage.collections.structure.AddElementOperation" flags="nn" index="TSZUe" />
       <concept id="1162934736510" name="jetbrains.mps.baseLanguage.collections.structure.GetElementOperation" flags="nn" index="34jXtK" />
       <concept id="1162935959151" name="jetbrains.mps.baseLanguage.collections.structure.GetSizeOperation" flags="nn" index="34oBXx" />
+      <concept id="1165525191778" name="jetbrains.mps.baseLanguage.collections.structure.GetFirstOperation" flags="nn" index="1uHKPH" />
       <concept id="1225727723840" name="jetbrains.mps.baseLanguage.collections.structure.FindFirstOperation" flags="nn" index="1z4cxt" />
     </language>
   </registry>
@@ -2419,5 +2511,2097 @@
       </node>
     </node>
   </node>
+  <node concept="1lH9Xt" id="4JVExmLHxKp">
+    <property role="TrG5h" value="ModelMergerTestLang2" />
+    <property role="3GE5qa" value="modelmergertestlang" />
+    <node concept="1LZb2c" id="4JVExmLHxKq" role="1SL9yI">
+      <property role="TrG5h" value="checkCorrectOrderInListMerge2" />
+      <node concept="3cqZAl" id="4JVExmLHxKr" role="3clF45" />
+      <node concept="3clFbS" id="4JVExmLHxKs" role="3clF47">
+        <node concept="3cpWs8" id="4JVExmLHxKt" role="3cqZAp">
+          <node concept="3cpWsn" id="4JVExmLHxKu" role="3cpWs9">
+            <property role="TrG5h" value="modelR" />
+            <node concept="3uibUv" id="4JVExmLHxKv" role="1tU5fm">
+              <ref role="3uigEE" to="mhbf:~SModel" resolve="SModel" />
+            </node>
+            <node concept="2YIFZM" id="5hEfjVnB_8R" role="33vP2m">
+              <ref role="37wK5l" node="5hEfjVnBdTg" resolve="makeTempModelFrom" />
+              <ref role="1Pybhc" node="5hEfjVnBcMg" resolve="TestUtil" />
+              <node concept="3xONca" id="5hEfjVod3Pf" role="37wK5m">
+                <ref role="3xOPvv" node="4JVExmLHxOo" resolve="testSource" />
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3cpWs8" id="4JVExmLHxK$" role="3cqZAp">
+          <node concept="3cpWsn" id="4JVExmLHxK_" role="3cpWs9">
+            <property role="TrG5h" value="modelL" />
+            <node concept="3uibUv" id="4JVExmLHxKA" role="1tU5fm">
+              <ref role="3uigEE" to="mhbf:~SModel" resolve="SModel" />
+            </node>
+            <node concept="2YIFZM" id="5hEfjVnB_95" role="33vP2m">
+              <ref role="37wK5l" node="5hEfjVnBdTg" resolve="makeTempModelFrom" />
+              <ref role="1Pybhc" node="5hEfjVnBcMg" resolve="TestUtil" />
+              <node concept="3xONca" id="5hEfjVod3Zv" role="37wK5m">
+                <ref role="3xOPvv" node="4JVExmLHxOu" resolve="testDestination" />
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3cpWs8" id="4JVExmLHxKF" role="3cqZAp">
+          <node concept="3cpWsn" id="4JVExmLHxKG" role="3cpWs9">
+            <property role="TrG5h" value="IdDestination" />
+            <node concept="3uibUv" id="4JVExmLHxKH" role="1tU5fm">
+              <ref role="3uigEE" to="mhbf:~SNodeId" resolve="SNodeId" />
+            </node>
+            <node concept="2OqwBi" id="4JVExmLHxKI" role="33vP2m">
+              <node concept="2JrnkZ" id="4JVExmLHxKJ" role="2Oq$k0">
+                <node concept="3xONca" id="4JVExmLHxKK" role="2JrQYb">
+                  <ref role="3xOPvv" node="4JVExmLHxOu" resolve="testDestination" />
+                </node>
+              </node>
+              <node concept="liA8E" id="4JVExmLHxKL" role="2OqNvi">
+                <ref role="37wK5l" to="mhbf:~SNode.getNodeId()" resolve="getNodeId" />
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbH" id="4JVExmLHxLc" role="3cqZAp" />
+        <node concept="3cpWs8" id="4JVExmLHxLd" role="3cqZAp">
+          <node concept="3cpWsn" id="4JVExmLHxLe" role="3cpWs9">
+            <property role="TrG5h" value="modelOut" />
+            <node concept="H_c77" id="4JVExmLHxLf" role="1tU5fm" />
+            <node concept="1N85M$" id="4JVExmLHxLg" role="33vP2m">
+              <node concept="1eOMI4" id="4JVExmLHxLi" role="1NkWSs">
+                <node concept="10QFUN" id="4JVExmLHxLj" role="1eOMHV">
+                  <node concept="H_c77" id="4JVExmLHxLk" role="10QFUM" />
+                  <node concept="37vLTw" id="4JVExmLHxLl" role="10QFUP">
+                    <ref role="3cqZAo" node="4JVExmLHxKu" resolve="modelR" />
+                  </node>
+                </node>
+              </node>
+              <node concept="1eOMI4" id="4JVExmLHxLm" role="1NkWGY">
+                <node concept="10QFUN" id="4JVExmLHxLn" role="1eOMHV">
+                  <node concept="H_c77" id="4JVExmLHxLo" role="10QFUM" />
+                  <node concept="37vLTw" id="4JVExmLHxLp" role="10QFUP">
+                    <ref role="3cqZAo" node="4JVExmLHxK_" resolve="modelL" />
+                  </node>
+                </node>
+              </node>
+              <node concept="2YIFZM" id="5hEfjVobKeP" role="1NkWSp">
+                <ref role="1Pybhc" node="5hEfjVnBcMg" resolve="TestUtil" />
+                <ref role="37wK5l" node="5hEfjVobgxA" resolve="modelMergeFrom" />
+                <node concept="2tJFMh" id="5hEfjVobKeQ" role="37wK5m">
+                  <node concept="ZC_QK" id="5hEfjVobKeR" role="2tJFKM">
+                    <ref role="2aWVGs" to="rkwz:2IQ1P8Sk2GM" resolve="ModelmergerTestLangPolicy" />
+                  </node>
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="2Hmddi" id="4JVExmLHxLq" role="3cqZAp">
+          <node concept="37vLTw" id="4JVExmLHxLr" role="2Hmdds">
+            <ref role="3cqZAo" node="4JVExmLHxLe" resolve="modelOut" />
+          </node>
+        </node>
+        <node concept="3clFbH" id="4JVExmLHxLs" role="3cqZAp" />
+        <node concept="3vlDli" id="4JVExmLHxLt" role="3cqZAp">
+          <node concept="3cmrfG" id="4JVExmLHxLu" role="3tpDZB">
+            <property role="3cmrfH" value="1" />
+          </node>
+          <node concept="2OqwBi" id="4JVExmLHxLv" role="3tpDZA">
+            <node concept="2OqwBi" id="4JVExmLHxLw" role="2Oq$k0">
+              <node concept="37vLTw" id="4JVExmLHxLx" role="2Oq$k0">
+                <ref role="3cqZAo" node="4JVExmLHxLe" resolve="modelOut" />
+              </node>
+              <node concept="2RRcyG" id="4JVExmLHxLy" role="2OqNvi" />
+            </node>
+            <node concept="34oBXx" id="4JVExmLHxLz" role="2OqNvi" />
+          </node>
+        </node>
+        <node concept="3cpWs8" id="4JVExmLHxL$" role="3cqZAp">
+          <node concept="3cpWsn" id="4JVExmLHxL_" role="3cpWs9">
+            <property role="TrG5h" value="sysAfterImport" />
+            <node concept="3Tqbb2" id="4JVExmLHxLA" role="1tU5fm">
+              <ref role="ehGHo" to="k6li:59jNLF_cXnN" resolve="tSystem" />
+            </node>
+            <node concept="1PxgMI" id="4JVExmLHxLB" role="33vP2m">
+              <node concept="chp4Y" id="4JVExmLHxLC" role="3oSUPX">
+                <ref role="cht4Q" to="k6li:59jNLF_cXnN" resolve="tSystem" />
+              </node>
+              <node concept="2OqwBi" id="4JVExmLHxLD" role="1m5AlR">
+                <node concept="2OqwBi" id="4JVExmLHxLE" role="2Oq$k0">
+                  <node concept="37vLTw" id="4JVExmLHxLF" role="2Oq$k0">
+                    <ref role="3cqZAo" node="4JVExmLHxLe" resolve="modelOut" />
+                  </node>
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+            <node concept="3oM_SD" id="6QnTwqHgoZg" role="1PaTwD">
+              <property role="3oM_SC" value="inserting" />
+            </node>
+            <node concept="3oM_SD" id="6QnTwqHgoZy" role="1PaTwD">
+              <property role="3oM_SC" value="a" />
+            </node>
+            <node concept="3oM_SD" id="6QnTwqHgoZP" role="1PaTwD">
+              <property role="3oM_SC" value="new" />
+            </node>
+            <node concept="3oM_SD" id="6QnTwqHgp0y" role="1PaTwD">
+              <property role="3oM_SC" value="before" />
+            </node>
+            <node concept="3oM_SD" id="6QnTwqHgp0R" role="1PaTwD">
+              <property role="3oM_SC" value="and" />
+            </node>
+            <node concept="3oM_SD" id="6QnTwqHgp14" role="1PaTwD">
+              <property role="3oM_SC" value="after" />
+            </node>
+            <node concept="3oM_SD" id="6QnTwqHgp1i" role="1PaTwD">
+              <property role="3oM_SC" value="an" />
+            </node>
+            <node concept="3oM_SD" id="6QnTwqHgp1x" role="1PaTwD">
+              <property role="3oM_SC" value="existing" />
+            </node>
+            <node concept="3oM_SD" id="6QnTwqHgp1U" role="1PaTwD">
+              <property role="3oM_SC" value="item" />
+            </node>
+          </node>
+        </node>
+        <node concept="3cpWs8" id="6QnTwqHgp2t" role="3cqZAp">
+          <node concept="3cpWsn" id="6QnTwqHgp2u" role="3cpWs9">
+            <property role="TrG5h" value="inA" />
+            <node concept="3Tqbb2" id="6QnTwqHgoKZ" role="1tU5fm">
+              <ref role="ehGHo" to="k6li:59jNLF_cTSb" resolve="tInPort" />
+            </node>
+            <node concept="2OqwBi" id="6QnTwqHgp2v" role="33vP2m">
+              <node concept="2OqwBi" id="6QnTwqHgp2w" role="2Oq$k0">
+                <node concept="37vLTw" id="6QnTwqHgp2x" role="2Oq$k0">
+                  <ref role="3cqZAo" node="2IQ1P8Sq6F_" resolve="sysAfterImport" />
+                </node>
+                <node concept="3Tsc0h" id="6QnTwqHgp2y" role="2OqNvi">
+                  <ref role="3TtcxE" to="k6li:59jNLF_cXnQ" resolve="inports" />
+                </node>
+              </node>
+              <node concept="1z4cxt" id="6QnTwqHgp2z" role="2OqNvi">
+                <node concept="1bVj0M" id="6QnTwqHgp2$" role="23t8la">
+                  <node concept="3clFbS" id="6QnTwqHgp2_" role="1bW5cS">
+                    <node concept="3clFbF" id="6QnTwqHgp2A" role="3cqZAp">
+                      <node concept="17R0WA" id="6QnTwqHgp2B" role="3clFbG">
+                        <node concept="2OqwBi" id="6QnTwqHgp2C" role="3uHU7B">
+                          <node concept="37vLTw" id="6QnTwqHgp2D" role="2Oq$k0">
+                            <ref role="3cqZAo" node="6QnTwqHgp2G" resolve="it" />
+                          </node>
+                          <node concept="3TrcHB" id="6QnTwqHgp2E" role="2OqNvi">
+                            <ref role="3TsBF5" to="tpck:h0TrG11" resolve="name" />
+                          </node>
+                        </node>
+                        <node concept="Xl_RD" id="6QnTwqHgp2F" role="3uHU7w">
+                          <property role="Xl_RC" value="A" />
+                        </node>
+                      </node>
+                    </node>
+                  </node>
+                  <node concept="Rh6nW" id="6QnTwqHgp2G" role="1bW2Oz">
+                    <property role="TrG5h" value="it" />
+                    <node concept="2jxLKc" id="6QnTwqHgp2H" role="1tU5fm" />
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+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3cpWs8" id="6QnTwqHgqtC" role="3cqZAp">
+          <node concept="3cpWsn" id="6QnTwqHgqtF" role="3cpWs9">
+            <property role="TrG5h" value="inB" />
+            <node concept="3Tqbb2" id="6QnTwqHgqtG" role="1tU5fm">
+              <ref role="ehGHo" to="k6li:59jNLF_cTSb" resolve="tInPort" />
+            </node>
+            <node concept="2OqwBi" id="6QnTwqHgqtH" role="33vP2m">
+              <node concept="2OqwBi" id="6QnTwqHgqtI" role="2Oq$k0">
+                <node concept="37vLTw" id="6QnTwqHgqtJ" role="2Oq$k0">
+                  <ref role="3cqZAo" node="2IQ1P8Sq6F_" resolve="sysAfterImport" />
+                </node>
+                <node concept="3Tsc0h" id="6QnTwqHgqtK" role="2OqNvi">
+                  <ref role="3TtcxE" to="k6li:59jNLF_cXnQ" resolve="inports" />
+                </node>
+              </node>
+              <node concept="1z4cxt" id="6QnTwqHgqtL" role="2OqNvi">
+                <node concept="1bVj0M" id="6QnTwqHgqtM" role="23t8la">
+                  <node concept="3clFbS" id="6QnTwqHgqtN" role="1bW5cS">
+                    <node concept="3clFbF" id="6QnTwqHgqtO" role="3cqZAp">
+                      <node concept="17R0WA" id="6QnTwqHgqtP" role="3clFbG">
+                        <node concept="2OqwBi" id="6QnTwqHgqtQ" role="3uHU7B">
+                          <node concept="37vLTw" id="6QnTwqHgqtR" role="2Oq$k0">
+                            <ref role="3cqZAo" node="6QnTwqHgqtU" resolve="it" />
+                          </node>
+                          <node concept="3TrcHB" id="6QnTwqHgqtS" role="2OqNvi">
+                            <ref role="3TsBF5" to="tpck:h0TrG11" resolve="name" />
+                          </node>
+                        </node>
+                        <node concept="Xl_RD" id="6QnTwqHgqtT" role="3uHU7w">
+                          <property role="Xl_RC" value="B" />
+                        </node>
+                      </node>
+                    </node>
+                  </node>
+                  <node concept="Rh6nW" id="6QnTwqHgqtU" role="1bW2Oz">
+                    <property role="TrG5h" value="it" />
+                    <node concept="2jxLKc" id="6QnTwqHgqtV" role="1tU5fm" />
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+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3cpWs8" id="6QnTwqHgr9b" role="3cqZAp">
+          <node concept="3cpWsn" id="6QnTwqHgr9e" role="3cpWs9">
+            <property role="TrG5h" value="inC" />
+            <node concept="3Tqbb2" id="6QnTwqHgr9f" role="1tU5fm">
+              <ref role="ehGHo" to="k6li:59jNLF_cTSb" resolve="tInPort" />
+            </node>
+            <node concept="2OqwBi" id="6QnTwqHgr9g" role="33vP2m">
+              <node concept="2OqwBi" id="6QnTwqHgr9h" role="2Oq$k0">
+                <node concept="37vLTw" id="6QnTwqHgr9i" role="2Oq$k0">
+                  <ref role="3cqZAo" node="2IQ1P8Sq6F_" resolve="sysAfterImport" />
+                </node>
+                <node concept="3Tsc0h" id="6QnTwqHgr9j" role="2OqNvi">
+                  <ref role="3TtcxE" to="k6li:59jNLF_cXnQ" resolve="inports" />
+                </node>
+              </node>
+              <node concept="1z4cxt" id="6QnTwqHgr9k" role="2OqNvi">
+                <node concept="1bVj0M" id="6QnTwqHgr9l" role="23t8la">
+                  <node concept="3clFbS" id="6QnTwqHgr9m" role="1bW5cS">
+                    <node concept="3clFbF" id="6QnTwqHgr9n" role="3cqZAp">
+                      <node concept="17R0WA" id="6QnTwqHgr9o" role="3clFbG">
+                        <node concept="2OqwBi" id="6QnTwqHgr9p" role="3uHU7B">
+                          <node concept="37vLTw" id="6QnTwqHgr9q" role="2Oq$k0">
+                            <ref role="3cqZAo" node="6QnTwqHgr9t" resolve="it" />
+                          </node>
+                          <node concept="3TrcHB" id="6QnTwqHgr9r" role="2OqNvi">
+                            <ref role="3TsBF5" to="tpck:h0TrG11" resolve="name" />
+                          </node>
+                        </node>
+                        <node concept="Xl_RD" id="6QnTwqHgr9s" role="3uHU7w">
+                          <property role="Xl_RC" value="C" />
+                        </node>
+                      </node>
+                    </node>
+                  </node>
+                  <node concept="Rh6nW" id="6QnTwqHgr9t" role="1bW2Oz">
+                    <property role="TrG5h" value="it" />
+                    <node concept="2jxLKc" id="6QnTwqHgr9u" role="1tU5fm" />
+                  </node>
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3cpWs8" id="6QnTwqHllvy" role="3cqZAp">
+          <node concept="3cpWsn" id="6QnTwqHllvz" role="3cpWs9">
+            <property role="TrG5h" value="inD" />
+            <node concept="3Tqbb2" id="6QnTwqHllv$" role="1tU5fm">
+              <ref role="ehGHo" to="k6li:59jNLF_cTSb" resolve="tInPort" />
+            </node>
+            <node concept="2OqwBi" id="6QnTwqHllv_" role="33vP2m">
+              <node concept="2OqwBi" id="6QnTwqHllvA" role="2Oq$k0">
+                <node concept="37vLTw" id="6QnTwqHllvB" role="2Oq$k0">
+                  <ref role="3cqZAo" node="2IQ1P8Sq6F_" resolve="sysAfterImport" />
+                </node>
+                <node concept="3Tsc0h" id="6QnTwqHllvC" role="2OqNvi">
+                  <ref role="3TtcxE" to="k6li:59jNLF_cXnQ" resolve="inports" />
+                </node>
+              </node>
+              <node concept="1z4cxt" id="6QnTwqHllvD" role="2OqNvi">
+                <node concept="1bVj0M" id="6QnTwqHllvE" role="23t8la">
+                  <node concept="3clFbS" id="6QnTwqHllvF" role="1bW5cS">
+                    <node concept="3clFbF" id="6QnTwqHllvG" role="3cqZAp">
+                      <node concept="17R0WA" id="6QnTwqHllvH" role="3clFbG">
+                        <node concept="2OqwBi" id="6QnTwqHllvI" role="3uHU7B">
+                          <node concept="37vLTw" id="6QnTwqHllvJ" role="2Oq$k0">
+                            <ref role="3cqZAo" node="6QnTwqHllvM" resolve="it" />
+                          </node>
+                          <node concept="3TrcHB" id="6QnTwqHllvK" role="2OqNvi">
+                            <ref role="3TsBF5" to="tpck:h0TrG11" resolve="name" />
+                          </node>
+                        </node>
+                        <node concept="Xl_RD" id="6QnTwqHllvL" role="3uHU7w">
+                          <property role="Xl_RC" value="D" />
+                        </node>
+                      </node>
+                    </node>
+                  </node>
+                  <node concept="Rh6nW" id="6QnTwqHllvM" role="1bW2Oz">
+                    <property role="TrG5h" value="it" />
+                    <node concept="2jxLKc" id="6QnTwqHllvN" role="1tU5fm" />
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+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3cpWs8" id="6QnTwqHllXD" role="3cqZAp">
+          <node concept="3cpWsn" id="6QnTwqHllXE" role="3cpWs9">
+            <property role="TrG5h" value="inE" />
+            <node concept="3Tqbb2" id="6QnTwqHllXF" role="1tU5fm">
+              <ref role="ehGHo" to="k6li:59jNLF_cTSb" resolve="tInPort" />
+            </node>
+            <node concept="2OqwBi" id="6QnTwqHllXG" role="33vP2m">
+              <node concept="2OqwBi" id="6QnTwqHllXH" role="2Oq$k0">
+                <node concept="37vLTw" id="6QnTwqHllXI" role="2Oq$k0">
+                  <ref role="3cqZAo" node="2IQ1P8Sq6F_" resolve="sysAfterImport" />
+                </node>
+                <node concept="3Tsc0h" id="6QnTwqHllXJ" role="2OqNvi">
+                  <ref role="3TtcxE" to="k6li:59jNLF_cXnQ" resolve="inports" />
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+              </node>
+              <node concept="1z4cxt" id="6QnTwqHllXK" role="2OqNvi">
+                <node concept="1bVj0M" id="6QnTwqHllXL" role="23t8la">
+                  <node concept="3clFbS" id="6QnTwqHllXM" role="1bW5cS">
+                    <node concept="3clFbF" id="6QnTwqHllXN" role="3cqZAp">
+                      <node concept="17R0WA" id="6QnTwqHllXO" role="3clFbG">
+                        <node concept="2OqwBi" id="6QnTwqHllXP" role="3uHU7B">
+                          <node concept="37vLTw" id="6QnTwqHllXQ" role="2Oq$k0">
+                            <ref role="3cqZAo" node="6QnTwqHllXT" resolve="it" />
+                          </node>
+                          <node concept="3TrcHB" id="6QnTwqHllXR" role="2OqNvi">
+                            <ref role="3TsBF5" to="tpck:h0TrG11" resolve="name" />
+                          </node>
+                        </node>
+                        <node concept="Xl_RD" id="6QnTwqHllXS" role="3uHU7w">
+                          <property role="Xl_RC" value="E" />
+                        </node>
+                      </node>
+                    </node>
+                  </node>
+                  <node concept="Rh6nW" id="6QnTwqHllXT" role="1bW2Oz">
+                    <property role="TrG5h" value="it" />
+                    <node concept="2jxLKc" id="6QnTwqHllXU" role="1tU5fm" />
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+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbH" id="6QnTwqHgr3D" role="3cqZAp" />
+        <node concept="3vlDli" id="6IWRPdWLWQW" role="3cqZAp">
+          <node concept="3cmrfG" id="6QnTwqHg3jk" role="3tpDZB">
+            <property role="3cmrfH" value="0" />
+          </node>
+          <node concept="2OqwBi" id="6QnTwqHgdbX" role="3tpDZA">
+            <node concept="37vLTw" id="6QnTwqHgp2I" role="2Oq$k0">
+              <ref role="3cqZAo" node="6QnTwqHgp2u" resolve="inA" />
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+            <node concept="2bSWHS" id="6QnTwqHge00" role="2OqNvi" />
+          </node>
+          <node concept="3_1$Yv" id="6QnTwqHg_xo" role="3_9lra">
+            <node concept="Xl_RD" id="6QnTwqHgA8L" role="3_1BAH">
+              <property role="Xl_RC" value="Inport A does not occur as first item in merged inport list" />
+            </node>
+          </node>
+        </node>
+        <node concept="3vlDli" id="6QnTwqHgsBs" role="3cqZAp">
+          <node concept="3cmrfG" id="6QnTwqHgsBt" role="3tpDZB">
+            <property role="3cmrfH" value="1" />
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+          <node concept="2OqwBi" id="6QnTwqHgsBu" role="3tpDZA">
+            <node concept="37vLTw" id="6QnTwqHgtT2" role="2Oq$k0">
+              <ref role="3cqZAo" node="6QnTwqHgqtF" resolve="inB" />
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+            <node concept="2bSWHS" id="6QnTwqHgsBw" role="2OqNvi" />
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+          <node concept="3_1$Yv" id="6QnTwqHgD3F" role="3_9lra">
+            <node concept="Xl_RD" id="6QnTwqHgDF4" role="3_1BAH">
+              <property role="Xl_RC" value="Inport B does not occur as second item in merged inport list" />
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+          </node>
+        </node>
+        <node concept="3vlDli" id="6QnTwqHlbaR" role="3cqZAp">
+          <node concept="3cmrfG" id="6QnTwqHlbaS" role="3tpDZB">
+            <property role="3cmrfH" value="2" />
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+          <node concept="2OqwBi" id="6QnTwqHlbaT" role="3tpDZA">
+            <node concept="37vLTw" id="6QnTwqHlbaU" role="2Oq$k0">
+              <ref role="3cqZAo" node="6QnTwqHgr9e" resolve="inC" />
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+            <node concept="2bSWHS" id="6QnTwqHlbaV" role="2OqNvi" />
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+          <node concept="3_1$Yv" id="6QnTwqHlbaW" role="3_9lra">
+            <node concept="Xl_RD" id="6QnTwqHlbaX" role="3_1BAH">
+              <property role="Xl_RC" value="Inport C does not occur as third item in merged inport list" />
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+          </node>
+        </node>
+        <node concept="3vlDli" id="6QnTwqHgtbc" role="3cqZAp">
+          <node concept="3cmrfG" id="6QnTwqHgtbd" role="3tpDZB">
+            <property role="3cmrfH" value="3" />
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+          <node concept="2OqwBi" id="6QnTwqHgtbe" role="3tpDZA">
+            <node concept="2bSWHS" id="6QnTwqHgtbg" role="2OqNvi" />
+            <node concept="37vLTw" id="6QnTwqHlm_P" role="2Oq$k0">
+              <ref role="3cqZAo" node="6QnTwqHllvz" resolve="inD" />
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+          <node concept="3_1$Yv" id="6QnTwqHgDFl" role="3_9lra">
+            <node concept="Xl_RD" id="6QnTwqHgE90" role="3_1BAH">
+              <property role="Xl_RC" value="Inport D does not occur as fourth item in merged inport list" />
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+          </node>
+        </node>
+        <node concept="3vlDli" id="6QnTwqHlbJn" role="3cqZAp">
+          <node concept="3cmrfG" id="6QnTwqHlbJo" role="3tpDZB">
+            <property role="3cmrfH" value="4" />
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+          <node concept="2OqwBi" id="6QnTwqHlbJp" role="3tpDZA">
+            <node concept="37vLTw" id="6QnTwqHlmAt" role="2Oq$k0">
+              <ref role="3cqZAo" node="6QnTwqHllXE" resolve="inE" />
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+            <node concept="2bSWHS" id="6QnTwqHlbJr" role="2OqNvi" />
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+          <node concept="3_1$Yv" id="6QnTwqHlbJs" role="3_9lra">
+            <node concept="Xl_RD" id="6QnTwqHlbJt" role="3_1BAH">
+              <property role="Xl_RC" value="Inport E does not occur as fifth item in merged inport list" />
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+        </node>
+        <node concept="3clFbH" id="2IQ1P8SqWX5" role="3cqZAp" />
+        <node concept="JA50E" id="2IQ1P8SrHoz" role="3cqZAp">
+          <node concept="3xONca" id="2IQ1P8SrHLE" role="JA92f">
+            <ref role="3xOPvv" node="2IQ1P8SrGlk" resolve="merged" />
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+          <node concept="37vLTw" id="2IQ1P8SrIck" role="JAdkl">
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+    <node concept="1qefOq" id="2IQ1P8SkbzY" role="1SKRRt">
+      <node concept="2Ro1FD" id="6IWRPdWGWrj" role="1qenE9">
+        <property role="TrG5h" value="sys1" />
+        <node concept="2Ro54h" id="6IWRPdWLD4j" role="2Ro1FG">
+          <property role="TrG5h" value="C" />
+          <property role="2Ro54k" value="1" />
+        </node>
+        <node concept="3xLA65" id="6IWRPdWGWrl" role="lGtFl">
+          <property role="TrG5h" value="testSource" />
+        </node>
+      </node>
+    </node>
+    <node concept="1qefOq" id="2IQ1P8SkcoZ" role="1SKRRt">
+      <node concept="2Ro1FD" id="6IWRPdWGVTu" role="1qenE9">
+        <property role="TrG5h" value="sys1" />
+        <node concept="2Ro54h" id="6IWRPdWJzhC" role="2Ro1FG">
+          <property role="TrG5h" value="A" />
+          <property role="2Ro54k" value="2" />
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+        <node concept="2Ro54h" id="6IWRPdWGWtK" role="2Ro1FG">
+          <property role="TrG5h" value="B" />
+          <property role="2Ro54k" value="3" />
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+        <node concept="2Ro54h" id="6IWRPdWGWqD" role="2Ro1FG">
+          <property role="TrG5h" value="C" />
+          <property role="2Ro54k" value="4" />
+        </node>
+        <node concept="3xLA65" id="6IWRPdWGVTC" role="lGtFl">
+          <property role="TrG5h" value="testDestination" />
+        </node>
+        <node concept="2Ro54h" id="6QnTwqHl5Yy" role="2Ro1FG">
+          <property role="TrG5h" value="D" />
+          <property role="2Ro54k" value="5" />
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+        <node concept="2Ro54h" id="6QnTwqHl632" role="2Ro1FG">
+          <property role="TrG5h" value="E" />
+          <property role="2Ro54k" value="6" />
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+      </node>
+    </node>
+    <node concept="1qefOq" id="2IQ1P8SrFKQ" role="1SKRRt">
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+          <node concept="2OqwBi" id="4JVExmLJoWB" role="3tpDZA">
+            <node concept="2JrnkZ" id="4JVExmLJoWC" role="2Oq$k0">
+              <node concept="37vLTw" id="4JVExmLJoWD" role="2JrQYb">
+                <ref role="3cqZAo" node="4JVExmLJoWr" resolve="sysAfterImport" />
+              </node>
+            </node>
+            <node concept="liA8E" id="4JVExmLJoWE" role="2OqNvi">
+              <ref role="37wK5l" to="mhbf:~SNode.getNodeId()" resolve="getNodeId" />
+            </node>
+          </node>
+        </node>
+        <node concept="3cpWs8" id="4JVExmLJoWF" role="3cqZAp">
+          <node concept="3cpWsn" id="4JVExmLJoWG" role="3cpWs9">
+            <property role="TrG5h" value="inports" />
+            <node concept="2I9FWS" id="4JVExmLJoWH" role="1tU5fm">
+              <ref role="2I9WkF" to="k6li:59jNLF_cTSb" resolve="tInPort" />
+            </node>
+            <node concept="2OqwBi" id="4JVExmLJoWI" role="33vP2m">
+              <node concept="37vLTw" id="4JVExmLJoWJ" role="2Oq$k0">
+                <ref role="3cqZAo" node="4JVExmLJoWr" resolve="sysAfterImport" />
+              </node>
+              <node concept="3Tsc0h" id="4JVExmLJoWK" role="2OqNvi">
+                <ref role="3TtcxE" to="k6li:59jNLF_cXnQ" resolve="inports" />
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3vlDli" id="4JVExmLJoWL" role="3cqZAp">
+          <node concept="2OqwBi" id="4JVExmLJoWM" role="3tpDZA">
+            <node concept="37vLTw" id="4JVExmLJoWN" role="2Oq$k0">
+              <ref role="3cqZAo" node="4JVExmLJoWG" resolve="inports" />
+            </node>
+            <node concept="34oBXx" id="4JVExmLJoWO" role="2OqNvi" />
+          </node>
+          <node concept="3cmrfG" id="4JVExmLJGQr" role="3tpDZB">
+            <property role="3cmrfH" value="3" />
+          </node>
+        </node>
+        <node concept="JA50E" id="4JVExmLJoWZ" role="3cqZAp">
+          <node concept="3xONca" id="4JVExmLJoX0" role="JA92f">
+            <ref role="3xOPvv" node="4JVExmLJoXo" resolve="merged" />
+          </node>
+          <node concept="37vLTw" id="4JVExmLJoX1" role="JAdkl">
+            <ref role="3cqZAo" node="4JVExmLJoWr" resolve="sysAfterImport" />
+          </node>
+          <node concept="3_1$Yv" id="4JVExmLJoX2" role="3_9lra" />
+        </node>
+      </node>
+    </node>
+    <node concept="1qefOq" id="4JVExmLJoX5" role="1SKRRt">
+      <node concept="2Ro1FD" id="4JVExmLJoX6" role="1qenE9">
+        <property role="TrG5h" value="sys1" />
+        <node concept="2Ro54h" id="4JVExmLJoX8" role="2Ro1FG">
+          <property role="TrG5h" value="B" />
+          <property role="2Ro54k" value="1" />
+        </node>
+        <node concept="2Ro54h" id="4JVExmLJoXa" role="2Ro1FG">
+          <property role="TrG5h" value="E" />
+          <property role="2Ro54k" value="1" />
+        </node>
+        <node concept="2Ro54h" id="4JVExmLJoXb" role="2Ro1FG">
+          <property role="TrG5h" value="G" />
+          <property role="2Ro54k" value="1" />
+        </node>
+        <node concept="3xLA65" id="4JVExmLJoXc" role="lGtFl">
+          <property role="TrG5h" value="testSource" />
+        </node>
+      </node>
+    </node>
+    <node concept="1qefOq" id="4JVExmLJoXd" role="1SKRRt">
+      <node concept="2Ro1FD" id="4JVExmLJoXe" role="1qenE9">
+        <property role="TrG5h" value="sys1" />
+        <node concept="2Ro54h" id="4JVExmLJoXf" role="2Ro1FG">
+          <property role="TrG5h" value="B" />
+          <property role="2Ro54k" value="1" />
+        </node>
+        <node concept="2Ro54h" id="4JVExmLJoXg" role="2Ro1FG">
+          <property role="TrG5h" value="C" />
+          <property role="2Ro54k" value="1" />
+        </node>
+        <node concept="2Ro54h" id="4JVExmLJoXh" role="2Ro1FG">
+          <property role="TrG5h" value="D" />
+          <property role="2Ro54k" value="1" />
+        </node>
+        <node concept="2Ro54h" id="4JVExmLJoXi" role="2Ro1FG">
+          <property role="TrG5h" value="F" />
+          <property role="2Ro54k" value="1" />
+        </node>
+        <node concept="3xLA65" id="4JVExmLJoXj" role="lGtFl">
+          <property role="TrG5h" value="testDestination" />
+        </node>
+      </node>
+    </node>
+    <node concept="1qefOq" id="4JVExmLJoXk" role="1SKRRt">
+      <node concept="2Ro1FD" id="4JVExmLJoXl" role="1qenE9">
+        <property role="TrG5h" value="sys1" />
+        <node concept="2Ro54h" id="4JVExmLJoXm" role="2Ro1FG">
+          <property role="TrG5h" value="B" />
+          <property role="2Ro54k" value="2" />
+        </node>
+        <node concept="3xLA65" id="4JVExmLJoXo" role="lGtFl">
+          <property role="TrG5h" value="merged" />
+        </node>
+        <node concept="2Ro54h" id="4JVExmLJoXq" role="2Ro1FG">
+          <property role="TrG5h" value="E" />
+          <property role="2Ro54k" value="1" />
+        </node>
+        <node concept="2Ro54h" id="4JVExmLJoXr" role="2Ro1FG">
+          <property role="TrG5h" value="G" />
+          <property role="2Ro54k" value="1" />
+        </node>
+      </node>
+    </node>
+  </node>
 </model>
 
diff --git a/code/solutions/de.itemis.model.merge.test/models/de.itemis.model.merge.test.plugin.mps b/code/solutions/de.itemis.model.merge.test/models/de.itemis.model.merge.test.plugin.mps
index a828ead07..8cf18db0c 100644
--- a/code/solutions/de.itemis.model.merge.test/models/de.itemis.model.merge.test.plugin.mps
+++ b/code/solutions/de.itemis.model.merge.test/models/de.itemis.model.merge.test.plugin.mps
@@ -9,6 +9,8 @@
   </languages>
   <imports>
     <import index="14sb" ref="r:798bef3e-3867-4aab-a0a7-1e9776b7e479(de.itemis.model.merge.diamond.structure)" />
+    <import index="k6li" ref="r:7c40b043-67ab-4fff-a68c-bb3e633629e4(test.de.itemis.mps.modelmerger.testlanguage.structure)" implicit="true" />
+    <import index="tpck" ref="r:00000000-0000-4000-0000-011c89590288(jetbrains.mps.lang.core.structure)" implicit="true" />
   </imports>
   <registry>
     <language id="f3061a53-9226-4cc5-a443-f952ceaf5816" name="jetbrains.mps.baseLanguage">
@@ -155,6 +157,7 @@
       <concept id="8422540920006554635" name="de.itemis.model.merge.structure.OptionalPolicy" flags="ng" index="3JN5hs">
         <child id="8422540920006555110" name="action" index="3JN5mL" />
       </concept>
+      <concept id="8422540920006539447" name="de.itemis.model.merge.structure.Auto" flags="ng" index="3JN9zw" />
       <concept id="8422540920006539446" name="de.itemis.model.merge.structure.Drop" flags="ng" index="3JN9zx" />
       <concept id="8422540920006612575" name="de.itemis.model.merge.structure.MultiChildPolicy" flags="ng" index="3JNno8">
         <child id="8422540920006612576" name="subPolicy" index="3JNnoR" />
@@ -915,5 +918,459 @@
       </node>
     </node>
   </node>
+  <node concept="1olOeT" id="2IQ1P8Sk2GM">
+    <property role="TrG5h" value="ModelmergerTestLangPolicy" />
+    <node concept="pHN19" id="2IQ1P8Sk2GN" role="3WPhuS">
+      <node concept="2V$Bhx" id="2IQ1P8Sk2GS" role="2V$M_3">
+        <property role="2V$B1T" value="d119cd03-ed7e-477f-adb6-22a3d2e6ea77" />
+        <property role="2V$B1Q" value="test.de.itemis.mps.modelmerger.testlanguage" />
+      </node>
+    </node>
+    <node concept="1oluLK" id="2IQ1P8Sk2On" role="1olsr8" />
+    <node concept="1olsrb" id="2IQ1P8Sk2H1" role="1olsr8">
+      <ref role="24zOxU" to="k6li:59jNLF_cTS6" resolve="tComponent" />
+      <node concept="3JNno8" id="2IQ1P8SkaVX" role="3JN1Yi">
+        <ref role="3Ze0ni" to="k6li:59jNLF_cTS9" resolve="subComponents" />
+        <node concept="3Z5p37" id="2IQ1P8SkaW0" role="3JNnoR">
+          <property role="3Z5p36" value="1VmHfRxJErv/NewOnRight" />
+          <node concept="3JN9zx" id="2IQ1P8SkaW1" role="3Z4xbE" />
+        </node>
+        <node concept="3Z5p37" id="2IQ1P8SkaW2" role="3JNnoR">
+          <property role="3Z5p36" value="1VmHfRxJErw/ExistsOnLeft" />
+          <node concept="3JHL42" id="2IQ1P8SkaW3" role="3Z4xbE" />
+        </node>
+        <node concept="3Z5p37" id="2IQ1P8SkaW4" role="3JNnoR">
+          <property role="3Z5p36" value="1VmHfRxJErz/ElementOnBoth" />
+          <node concept="3JN9zw" id="2IQ1P8SkaW5" role="3Z4xbE" />
+        </node>
+      </node>
+      <node concept="1orWGm" id="2IQ1P8SkaVO" role="1orW53">
+        <ref role="3iOP7l" to="k6li:59jNLF_cTS7" resolve="name" />
+        <node concept="1orWrO" id="2IQ1P8SkaVS" role="1orWrN" />
+      </node>
+      <node concept="230_S" id="2IQ1P8Sk2H0" role="21DrV">
+        <node concept="3clFbS" id="2IQ1P8Sk2GZ" role="2VODD2">
+          <node concept="3cpWs6" id="2IQ1P8Sk2GY" role="3cqZAp">
+            <node concept="2OqwBi" id="2IQ1P8SpAAI" role="3cqZAk">
+              <node concept="233M7" id="2IQ1P8SpAuv" role="2Oq$k0" />
+              <node concept="3TrcHB" id="2IQ1P8SpAJ9" role="2OqNvi">
+                <ref role="3TsBF5" to="k6li:59jNLF_cTS7" resolve="name" />
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+      <node concept="1DuYjb" id="2IQ1P8SkaWc" role="1IWF8q">
+        <ref role="3Ze0ni" to="k6li:59jNLF_cTSk" resolve="inPort" />
+        <node concept="1orWrO" id="2IQ1P8SkaWg" role="3JN5mL" />
+      </node>
+      <node concept="1DuYjb" id="2IQ1P8SkaWn" role="1IWF8q">
+        <ref role="3Ze0ni" to="k6li:59jNLF_cTSn" resolve="outPort" />
+        <node concept="1orWrO" id="2IQ1P8Srskz" role="3JN5mL" />
+      </node>
+    </node>
+    <node concept="1olsrb" id="2IQ1P8Sk2H6" role="1olsr8">
+      <ref role="24zOxU" to="k6li:59jNLF_cTSh" resolve="tOutPort" />
+      <node concept="1orWGm" id="2IQ1P8SkaQK" role="1orW53">
+        <ref role="3iOP7l" to="tpck:h0TrG11" resolve="name" />
+        <node concept="1orWrO" id="2IQ1P8SkaQO" role="1orWrN" />
+      </node>
+      <node concept="1orWGm" id="2IQ1P8SkaQR" role="1orW53">
+        <ref role="3iOP7l" to="k6li:59jNLF_cTSj" resolve="value" />
+        <node concept="3DZp98" id="2IQ1P8SrpS8" role="1orWrN">
+          <node concept="3clFbS" id="2IQ1P8SrpSa" role="2VODD2">
+            <node concept="3clFbF" id="2IQ1P8SrpSy" role="3cqZAp">
+              <node concept="3cpWs3" id="2IQ1P8Srr4y" role="3clFbG">
+                <node concept="2OqwBi" id="2IQ1P8Srruk" role="3uHU7w">
+                  <node concept="3DScHg" id="2IQ1P8Srr5h" role="2Oq$k0" />
+                  <node concept="3TrcHB" id="2IQ1P8SrrWY" role="2OqNvi">
+                    <ref role="3TsBF5" to="k6li:59jNLF_cTSj" resolve="value" />
+                  </node>
+                </node>
+                <node concept="2OqwBi" id="2IQ1P8Srqam" role="3uHU7B">
+                  <node concept="3DZwUI" id="2IQ1P8SrpSx" role="2Oq$k0" />
+                  <node concept="3TrcHB" id="2IQ1P8Srqlp" role="2OqNvi">
+                    <ref role="3TsBF5" to="k6li:59jNLF_cTSj" resolve="value" />
+                  </node>
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+      <node concept="230_S" id="2IQ1P8Sk2H5" role="21DrV">
+        <node concept="3clFbS" id="2IQ1P8Sk2H4" role="2VODD2">
+          <node concept="3cpWs6" id="2IQ1P8Sk2H3" role="3cqZAp">
+            <node concept="2OqwBi" id="2IQ1P8SpA7Y" role="3cqZAk">
+              <node concept="233M7" id="2IQ1P8Sp_YT" role="2Oq$k0" />
+              <node concept="3TrcHB" id="2IQ1P8SpAro" role="2OqNvi">
+                <ref role="3TsBF5" to="tpck:h0TrG11" resolve="name" />
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+    </node>
+    <node concept="1olsrb" id="2IQ1P8Sk2Hb" role="1olsr8">
+      <ref role="24zOxU" to="k6li:2gRlde2N6ff" resolve="tSubComponent" />
+      <node concept="1orWGm" id="2IQ1P8SkaSZ" role="1orW53">
+        <ref role="3iOP7l" to="tpck:h0TrG11" resolve="name" />
+        <node concept="1orWrO" id="2IQ1P8SkaT3" role="1orWrN" />
+      </node>
+      <node concept="230_S" id="2IQ1P8Sk2Ha" role="21DrV">
+        <node concept="3clFbS" id="2IQ1P8Sk2H9" role="2VODD2">
+          <node concept="3cpWs6" id="2IQ1P8Sk2H8" role="3cqZAp">
+            <node concept="2OqwBi" id="2IQ1P8Sp_KM" role="3cqZAk">
+              <node concept="233M7" id="2IQ1P8Sp_FU" role="2Oq$k0" />
+              <node concept="3TrcHB" id="2IQ1P8Sp_VM" role="2OqNvi">
+                <ref role="3TsBF5" to="tpck:h0TrG11" resolve="name" />
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+      <node concept="1DuYjb" id="2IQ1P8SkaTa" role="1IWF8q">
+        <ref role="3Ze0ni" to="k6li:2gRlde2N9_m" resolve="inport" />
+        <node concept="1orWrO" id="2IQ1P8SkaVz" role="3JN5mL" />
+      </node>
+      <node concept="1DuYjb" id="2IQ1P8SkaVE" role="1IWF8q">
+        <ref role="3Ze0ni" to="k6li:2gRlde2N9_o" resolve="outport" />
+        <node concept="3iOvoU" id="2IQ1P8SkaVL" role="3JN5mL" />
+      </node>
+    </node>
+    <node concept="1olsrb" id="2IQ1P8Sk2Hg" role="1olsr8">
+      <ref role="24zOxU" to="k6li:59jNLF_cXnN" resolve="tSystem" />
+      <node concept="1orWGm" id="2IQ1P8SkaSS" role="1orW53">
+        <ref role="3iOP7l" to="tpck:h0TrG11" resolve="name" />
+        <node concept="1orWrO" id="2IQ1P8SkaSW" role="1orWrN" />
+      </node>
+      <node concept="3JNno8" id="2IQ1P8SkaSr" role="3JN1Yi">
+        <ref role="3Ze0ni" to="k6li:59jNLF_cXnT" resolve="outports" />
+        <node concept="3Z5p37" id="2IQ1P8SkaSG" role="3JNnoR">
+          <property role="3Z5p36" value="1VmHfRxJErv/NewOnRight" />
+          <node concept="3JHzSW" id="4JVExmLHWjw" role="3Z4xbE" />
+        </node>
+        <node concept="3Z5p37" id="2IQ1P8SkaSI" role="3JNnoR">
+          <property role="3Z5p36" value="1VmHfRxJErw/ExistsOnLeft" />
+          <node concept="3JHL42" id="2IQ1P8SkaSJ" role="3Z4xbE" />
+        </node>
+        <node concept="3Z5p37" id="2IQ1P8SkaSK" role="3JNnoR">
+          <property role="3Z5p36" value="1VmHfRxJErz/ElementOnBoth" />
+          <node concept="3JN9zw" id="2IQ1P8SkaSL" role="3Z4xbE" />
+        </node>
+      </node>
+      <node concept="3JNno8" id="2IQ1P8SkaRL" role="3JN1Yi">
+        <ref role="3Ze0ni" to="k6li:59jNLF_cXnQ" resolve="inports" />
+        <node concept="3Z5p37" id="2IQ1P8SkaRZ" role="3JNnoR">
+          <property role="3Z5p36" value="1VmHfRxJErv/NewOnRight" />
+          <node concept="3JHzSW" id="4JVExmLHWjz" role="3Z4xbE" />
+        </node>
+        <node concept="3Z5p37" id="2IQ1P8SkaS1" role="3JNnoR">
+          <property role="3Z5p36" value="1VmHfRxJErw/ExistsOnLeft" />
+          <node concept="3JHL42" id="2IQ1P8SkaS2" role="3Z4xbE" />
+        </node>
+        <node concept="3Z5p37" id="2IQ1P8SkaS3" role="3JNnoR">
+          <property role="3Z5p36" value="1VmHfRxJErz/ElementOnBoth" />
+          <node concept="3JN9zw" id="2IQ1P8SkaS4" role="3Z4xbE" />
+        </node>
+      </node>
+      <node concept="3JNno8" id="2IQ1P8SkaR2" role="3JN1Yi">
+        <ref role="3Ze0ni" to="k6li:59jNLF_cXnO" resolve="components" />
+        <node concept="3Z5p37" id="2IQ1P8SkaRk" role="3JNnoR">
+          <property role="3Z5p36" value="1VmHfRxJErv/NewOnRight" />
+          <node concept="3JHzSW" id="4JVExmLHWjA" role="3Z4xbE" />
+        </node>
+        <node concept="3Z5p37" id="2IQ1P8SkaRt" role="3JNnoR">
+          <property role="3Z5p36" value="1VmHfRxJErw/ExistsOnLeft" />
+          <node concept="3JHL42" id="2IQ1P8SkaR_" role="3Z4xbE" />
+        </node>
+        <node concept="3Z5p37" id="2IQ1P8SkaR5" role="3JNnoR">
+          <property role="3Z5p36" value="1VmHfRxJErz/ElementOnBoth" />
+          <node concept="3JN9zw" id="2IQ1P8SkaR9" role="3Z4xbE" />
+        </node>
+      </node>
+      <node concept="230_S" id="2IQ1P8Sk2Hf" role="21DrV">
+        <node concept="3clFbS" id="2IQ1P8Sk2He" role="2VODD2">
+          <node concept="3cpWs6" id="2IQ1P8Sk2Hd" role="3cqZAp">
+            <node concept="2OqwBi" id="2IQ1P8Sp_gh" role="3cqZAk">
+              <node concept="233M7" id="2IQ1P8Sp_79" role="2Oq$k0" />
+              <node concept="3TrcHB" id="2IQ1P8Sp_vu" role="2OqNvi">
+                <ref role="3TsBF5" to="tpck:h0TrG11" resolve="name" />
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+    </node>
+    <node concept="1olsrb" id="2IQ1P8Sk2Hl" role="1olsr8">
+      <ref role="24zOxU" to="k6li:59jNLF_cTSb" resolve="tInPort" />
+      <node concept="1orWGm" id="2IQ1P8Skax7" role="1orW53">
+        <ref role="3iOP7l" to="tpck:h0TrG11" resolve="name" />
+        <node concept="1orWrO" id="2IQ1P8SkaQ$" role="1orWrN" />
+      </node>
+      <node concept="1orWGm" id="2IQ1P8SkaQB" role="1orW53">
+        <ref role="3iOP7l" to="k6li:59jNLF_cTSe" resolve="value" />
+        <node concept="3DZp98" id="2IQ1P8SrnB$" role="1orWrN">
+          <node concept="3clFbS" id="2IQ1P8SrnBA" role="2VODD2">
+            <node concept="3clFbF" id="2IQ1P8SrnKG" role="3cqZAp">
+              <node concept="3cpWs3" id="2IQ1P8SroYD" role="3clFbG">
+                <node concept="2OqwBi" id="2IQ1P8Srpzg" role="3uHU7w">
+                  <node concept="3DScHg" id="2IQ1P8SroZr" role="2Oq$k0" />
+                  <node concept="3TrcHB" id="2IQ1P8SrpIt" role="2OqNvi">
+                    <ref role="3TsBF5" to="k6li:59jNLF_cTSe" resolve="value" />
+                  </node>
+                </node>
+                <node concept="2OqwBi" id="2IQ1P8Sro4t" role="3uHU7B">
+                  <node concept="3DZwUI" id="2IQ1P8SrnKF" role="2Oq$k0" />
+                  <node concept="3TrcHB" id="2IQ1P8Srofw" role="2OqNvi">
+                    <ref role="3TsBF5" to="k6li:59jNLF_cTSe" resolve="value" />
+                  </node>
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+      <node concept="230_S" id="2IQ1P8Sk2Hk" role="21DrV">
+        <node concept="3clFbS" id="2IQ1P8Sk2Hj" role="2VODD2">
+          <node concept="3cpWs6" id="2IQ1P8Sk2Hi" role="3cqZAp">
+            <node concept="2OqwBi" id="2IQ1P8Sp$T2" role="3cqZAk">
+              <node concept="233M7" id="2IQ1P8Sp$FK" role="2Oq$k0" />
+              <node concept="3TrcHB" id="2IQ1P8Sp_42" role="2OqNvi">
+                <ref role="3TsBF5" to="tpck:h0TrG11" resolve="name" />
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+    </node>
+  </node>
+  <node concept="1olOeT" id="4JVExmLIpdI">
+    <property role="TrG5h" value="ModelmergerTestLangPolicy2" />
+    <node concept="pHN19" id="4JVExmLIpdJ" role="3WPhuS">
+      <node concept="2V$Bhx" id="4JVExmLIpdK" role="2V$M_3">
+        <property role="2V$B1T" value="d119cd03-ed7e-477f-adb6-22a3d2e6ea77" />
+        <property role="2V$B1Q" value="test.de.itemis.mps.modelmerger.testlanguage" />
+      </node>
+    </node>
+    <node concept="1oluLK" id="4JVExmLIpdL" role="1olsr8" />
+    <node concept="1olsrb" id="4JVExmLIpdM" role="1olsr8">
+      <ref role="24zOxU" to="k6li:59jNLF_cTS6" resolve="tComponent" />
+      <node concept="3JNno8" id="4JVExmLIpdN" role="3JN1Yi">
+        <ref role="3Ze0ni" to="k6li:59jNLF_cTS9" resolve="subComponents" />
+        <node concept="3Z5p37" id="4JVExmLIpdO" role="3JNnoR">
+          <property role="3Z5p36" value="1VmHfRxJErv/NewOnRight" />
+          <node concept="3JN9zx" id="4JVExmLIpdP" role="3Z4xbE" />
+        </node>
+        <node concept="3Z5p37" id="4JVExmLIpdQ" role="3JNnoR">
+          <property role="3Z5p36" value="1VmHfRxJErw/ExistsOnLeft" />
+          <node concept="3JHL42" id="4JVExmLIpdR" role="3Z4xbE" />
+        </node>
+        <node concept="3Z5p37" id="4JVExmLIpdS" role="3JNnoR">
+          <property role="3Z5p36" value="1VmHfRxJErz/ElementOnBoth" />
+          <node concept="3JN9zw" id="4JVExmLIpdT" role="3Z4xbE" />
+        </node>
+      </node>
+      <node concept="1orWGm" id="4JVExmLIpdU" role="1orW53">
+        <ref role="3iOP7l" to="k6li:59jNLF_cTS7" resolve="name" />
+        <node concept="1orWrO" id="4JVExmLIpdV" role="1orWrN" />
+      </node>
+      <node concept="230_S" id="4JVExmLIpdW" role="21DrV">
+        <node concept="3clFbS" id="4JVExmLIpdX" role="2VODD2">
+          <node concept="3cpWs6" id="4JVExmLIpdY" role="3cqZAp">
+            <node concept="2OqwBi" id="4JVExmLIpdZ" role="3cqZAk">
+              <node concept="233M7" id="4JVExmLIpe0" role="2Oq$k0" />
+              <node concept="3TrcHB" id="4JVExmLIpe1" role="2OqNvi">
+                <ref role="3TsBF5" to="k6li:59jNLF_cTS7" resolve="name" />
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+      <node concept="1DuYjb" id="4JVExmLIpe2" role="1IWF8q">
+        <ref role="3Ze0ni" to="k6li:59jNLF_cTSk" resolve="inPort" />
+        <node concept="1orWrO" id="4JVExmLIpe3" role="3JN5mL" />
+      </node>
+      <node concept="1DuYjb" id="4JVExmLIpe4" role="1IWF8q">
+        <ref role="3Ze0ni" to="k6li:59jNLF_cTSn" resolve="outPort" />
+        <node concept="1orWrO" id="4JVExmLIpe5" role="3JN5mL" />
+      </node>
+    </node>
+    <node concept="1olsrb" id="4JVExmLIpe6" role="1olsr8">
+      <ref role="24zOxU" to="k6li:59jNLF_cTSh" resolve="tOutPort" />
+      <node concept="1orWGm" id="4JVExmLIpe7" role="1orW53">
+        <ref role="3iOP7l" to="tpck:h0TrG11" resolve="name" />
+        <node concept="1orWrO" id="4JVExmLIpe8" role="1orWrN" />
+      </node>
+      <node concept="1orWGm" id="4JVExmLIpe9" role="1orW53">
+        <ref role="3iOP7l" to="k6li:59jNLF_cTSj" resolve="value" />
+        <node concept="3DZp98" id="4JVExmLIpea" role="1orWrN">
+          <node concept="3clFbS" id="4JVExmLIpeb" role="2VODD2">
+            <node concept="3clFbF" id="4JVExmLIpec" role="3cqZAp">
+              <node concept="3cpWs3" id="4JVExmLIped" role="3clFbG">
+                <node concept="2OqwBi" id="4JVExmLIpee" role="3uHU7w">
+                  <node concept="3DScHg" id="4JVExmLIpef" role="2Oq$k0" />
+                  <node concept="3TrcHB" id="4JVExmLIpeg" role="2OqNvi">
+                    <ref role="3TsBF5" to="k6li:59jNLF_cTSj" resolve="value" />
+                  </node>
+                </node>
+                <node concept="2OqwBi" id="4JVExmLIpeh" role="3uHU7B">
+                  <node concept="3DZwUI" id="4JVExmLIpei" role="2Oq$k0" />
+                  <node concept="3TrcHB" id="4JVExmLIpej" role="2OqNvi">
+                    <ref role="3TsBF5" to="k6li:59jNLF_cTSj" resolve="value" />
+                  </node>
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+      <node concept="230_S" id="4JVExmLIpek" role="21DrV">
+        <node concept="3clFbS" id="4JVExmLIpel" role="2VODD2">
+          <node concept="3cpWs6" id="4JVExmLIpem" role="3cqZAp">
+            <node concept="2OqwBi" id="4JVExmLIpen" role="3cqZAk">
+              <node concept="233M7" id="4JVExmLIpeo" role="2Oq$k0" />
+              <node concept="3TrcHB" id="4JVExmLIpep" role="2OqNvi">
+                <ref role="3TsBF5" to="tpck:h0TrG11" resolve="name" />
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+    </node>
+    <node concept="1olsrb" id="4JVExmLIpeq" role="1olsr8">
+      <ref role="24zOxU" to="k6li:2gRlde2N6ff" resolve="tSubComponent" />
+      <node concept="1orWGm" id="4JVExmLIper" role="1orW53">
+        <ref role="3iOP7l" to="tpck:h0TrG11" resolve="name" />
+        <node concept="1orWrO" id="4JVExmLIpes" role="1orWrN" />
+      </node>
+      <node concept="230_S" id="4JVExmLIpet" role="21DrV">
+        <node concept="3clFbS" id="4JVExmLIpeu" role="2VODD2">
+          <node concept="3cpWs6" id="4JVExmLIpev" role="3cqZAp">
+            <node concept="2OqwBi" id="4JVExmLIpew" role="3cqZAk">
+              <node concept="233M7" id="4JVExmLIpex" role="2Oq$k0" />
+              <node concept="3TrcHB" id="4JVExmLIpey" role="2OqNvi">
+                <ref role="3TsBF5" to="tpck:h0TrG11" resolve="name" />
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+      <node concept="1DuYjb" id="4JVExmLIpez" role="1IWF8q">
+        <ref role="3Ze0ni" to="k6li:2gRlde2N9_m" resolve="inport" />
+        <node concept="1orWrO" id="4JVExmLIpe$" role="3JN5mL" />
+      </node>
+      <node concept="1DuYjb" id="4JVExmLIpe_" role="1IWF8q">
+        <ref role="3Ze0ni" to="k6li:2gRlde2N9_o" resolve="outport" />
+        <node concept="3iOvoU" id="4JVExmLIpeA" role="3JN5mL" />
+      </node>
+    </node>
+    <node concept="1olsrb" id="4JVExmLIpeB" role="1olsr8">
+      <ref role="24zOxU" to="k6li:59jNLF_cXnN" resolve="tSystem" />
+      <node concept="1orWGm" id="4JVExmLIpeC" role="1orW53">
+        <ref role="3iOP7l" to="tpck:h0TrG11" resolve="name" />
+        <node concept="1orWrO" id="4JVExmLIpeD" role="1orWrN" />
+      </node>
+      <node concept="3JNno8" id="4JVExmLIpeE" role="3JN1Yi">
+        <ref role="3Ze0ni" to="k6li:59jNLF_cXnT" resolve="outports" />
+        <node concept="3Z5p37" id="4JVExmLIpeF" role="3JNnoR">
+          <property role="3Z5p36" value="1VmHfRxJErv/NewOnRight" />
+          <node concept="3JHzSW" id="4JVExmLIpeG" role="3Z4xbE" />
+        </node>
+        <node concept="3Z5p37" id="4JVExmLIpeH" role="3JNnoR">
+          <property role="3Z5p36" value="1VmHfRxJErw/ExistsOnLeft" />
+          <node concept="3JN9zx" id="4JVExmLIplI" role="3Z4xbE" />
+        </node>
+        <node concept="3Z5p37" id="4JVExmLIpeJ" role="3JNnoR">
+          <property role="3Z5p36" value="1VmHfRxJErz/ElementOnBoth" />
+          <node concept="3JN9zw" id="4JVExmLIpeK" role="3Z4xbE" />
+        </node>
+      </node>
+      <node concept="3JNno8" id="4JVExmLIpeL" role="3JN1Yi">
+        <ref role="3Ze0ni" to="k6li:59jNLF_cXnQ" resolve="inports" />
+        <node concept="3Z5p37" id="4JVExmLIpeM" role="3JNnoR">
+          <property role="3Z5p36" value="1VmHfRxJErv/NewOnRight" />
+          <node concept="3JHzSW" id="4JVExmLIpeN" role="3Z4xbE" />
+        </node>
+        <node concept="3Z5p37" id="4JVExmLIpeO" role="3JNnoR">
+          <property role="3Z5p36" value="1VmHfRxJErw/ExistsOnLeft" />
+          <node concept="3JN9zx" id="4JVExmLIplL" role="3Z4xbE" />
+        </node>
+        <node concept="3Z5p37" id="4JVExmLIpeQ" role="3JNnoR">
+          <property role="3Z5p36" value="1VmHfRxJErz/ElementOnBoth" />
+          <node concept="3JN9zw" id="4JVExmLIpeR" role="3Z4xbE" />
+        </node>
+      </node>
+      <node concept="3JNno8" id="4JVExmLIpeS" role="3JN1Yi">
+        <ref role="3Ze0ni" to="k6li:59jNLF_cXnO" resolve="components" />
+        <node concept="3Z5p37" id="4JVExmLIpeT" role="3JNnoR">
+          <property role="3Z5p36" value="1VmHfRxJErv/NewOnRight" />
+          <node concept="3JHzSW" id="4JVExmLIpeU" role="3Z4xbE" />
+        </node>
+        <node concept="3Z5p37" id="4JVExmLIpeV" role="3JNnoR">
+          <property role="3Z5p36" value="1VmHfRxJErw/ExistsOnLeft" />
+          <node concept="3JN9zx" id="4JVExmLIplO" role="3Z4xbE" />
+        </node>
+        <node concept="3Z5p37" id="4JVExmLIpeX" role="3JNnoR">
+          <property role="3Z5p36" value="1VmHfRxJErz/ElementOnBoth" />
+          <node concept="3JN9zw" id="4JVExmLIpeY" role="3Z4xbE" />
+        </node>
+      </node>
+      <node concept="230_S" id="4JVExmLIpeZ" role="21DrV">
+        <node concept="3clFbS" id="4JVExmLIpf0" role="2VODD2">
+          <node concept="3cpWs6" id="4JVExmLIpf1" role="3cqZAp">
+            <node concept="2OqwBi" id="4JVExmLIpf2" role="3cqZAk">
+              <node concept="233M7" id="4JVExmLIpf3" role="2Oq$k0" />
+              <node concept="3TrcHB" id="4JVExmLIpf4" role="2OqNvi">
+                <ref role="3TsBF5" to="tpck:h0TrG11" resolve="name" />
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+    </node>
+    <node concept="1olsrb" id="4JVExmLIpf5" role="1olsr8">
+      <ref role="24zOxU" to="k6li:59jNLF_cTSb" resolve="tInPort" />
+      <node concept="1orWGm" id="4JVExmLIpf6" role="1orW53">
+        <ref role="3iOP7l" to="tpck:h0TrG11" resolve="name" />
+        <node concept="1orWrO" id="4JVExmLIpf7" role="1orWrN" />
+      </node>
+      <node concept="1orWGm" id="4JVExmLIpf8" role="1orW53">
+        <ref role="3iOP7l" to="k6li:59jNLF_cTSe" resolve="value" />
+        <node concept="3DZp98" id="4JVExmLIpf9" role="1orWrN">
+          <node concept="3clFbS" id="4JVExmLIpfa" role="2VODD2">
+            <node concept="3clFbF" id="4JVExmLIpfb" role="3cqZAp">
+              <node concept="3cpWs3" id="4JVExmLIpfc" role="3clFbG">
+                <node concept="2OqwBi" id="4JVExmLIpfd" role="3uHU7w">
+                  <node concept="3DScHg" id="4JVExmLIpfe" role="2Oq$k0" />
+                  <node concept="3TrcHB" id="4JVExmLIpff" role="2OqNvi">
+                    <ref role="3TsBF5" to="k6li:59jNLF_cTSe" resolve="value" />
+                  </node>
+                </node>
+                <node concept="2OqwBi" id="4JVExmLIpfg" role="3uHU7B">
+                  <node concept="3DZwUI" id="4JVExmLIpfh" role="2Oq$k0" />
+                  <node concept="3TrcHB" id="4JVExmLIpfi" role="2OqNvi">
+                    <ref role="3TsBF5" to="k6li:59jNLF_cTSe" resolve="value" />
+                  </node>
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+      <node concept="230_S" id="4JVExmLIpfj" role="21DrV">
+        <node concept="3clFbS" id="4JVExmLIpfk" role="2VODD2">
+          <node concept="3cpWs6" id="4JVExmLIpfl" role="3cqZAp">
+            <node concept="2OqwBi" id="4JVExmLIpfm" role="3cqZAk">
+              <node concept="233M7" id="4JVExmLIpfn" role="2Oq$k0" />
+              <node concept="3TrcHB" id="4JVExmLIpfo" role="2OqNvi">
+                <ref role="3TsBF5" to="tpck:h0TrG11" resolve="name" />
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+    </node>
+  </node>
 </model>
 
diff --git a/code/solutions/de.itemis.model.merge.test/models/de.itemis.model.merge.test.util.mps b/code/solutions/de.itemis.model.merge.test/models/de.itemis.model.merge.test.util.mps
index 35aec06cc..f0c70523e 100644
--- a/code/solutions/de.itemis.model.merge.test/models/de.itemis.model.merge.test.util.mps
+++ b/code/solutions/de.itemis.model.merge.test/models/de.itemis.model.merge.test.util.mps
@@ -670,6 +670,7 @@
             </node>
           </node>
         </node>
+        <node concept="3clFbH" id="2IQ1P8Sn3aR" role="3cqZAp" />
         <node concept="3clFbF" id="1Av7ChlWg0X" role="3cqZAp">
           <node concept="2OqwBi" id="1Av7ChlWg0Y" role="3clFbG">
             <node concept="37vLTw" id="4WBgwWtkTmr" role="2Oq$k0">
diff --git a/code/treenotation/com.mbeddr.mpsutil.treenotation.runtime/models/com/mbeddr/mpsutil/treenotation/runtime.mps b/code/treenotation/com.mbeddr.mpsutil.treenotation.runtime/models/com/mbeddr/mpsutil/treenotation/runtime.mps
index 8fee89145..61022b6ec 100755
--- a/code/treenotation/com.mbeddr.mpsutil.treenotation.runtime/models/com/mbeddr/mpsutil/treenotation/runtime.mps
+++ b/code/treenotation/com.mbeddr.mpsutil.treenotation.runtime/models/com/mbeddr/mpsutil/treenotation/runtime.mps
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <model ref="r:55549eb8-b827-44b3-bd84-ef3114bd2fe2(com.mbeddr.mpsutil.treenotation.runtime)">
   <persistence version="9" />
+  <attribute name="doNotGenerate" value="false" />
   <languages>
     <use id="18bc6592-03a6-4e29-a83a-7ff23bde13ba" name="jetbrains.mps.lang.editor" version="14" />
     <use id="63650c59-16c8-498a-99c8-005c7ee9515d" name="jetbrains.mps.lang.access" version="0" />
@@ -12875,9 +12876,6 @@
         </node>
         <node concept="3clFbF" id="3iAZL$aoPse" role="3cqZAp">
           <node concept="2OqwBi" id="3iAZL$aoPvx" role="3clFbG">
-            <node concept="37vLTw" id="3iAZL$aoQFn" role="2Oq$k0">
-              <ref role="3cqZAo" node="2rPTijxxYI0" resolve="g2" />
-            </node>
             <node concept="liA8E" id="3iAZL$aoPvy" role="2OqNvi">
               <ref role="37wK5l" to="z60i:~Graphics2D.setRenderingHint(java.awt.RenderingHints$Key,java.lang.Object)" resolve="setRenderingHint" />
               <node concept="10M0yZ" id="3iAZL$aoPBD" role="37wK5m">
@@ -12889,6 +12887,9 @@
                 <ref role="3cqZAo" to="z60i:~RenderingHints.VALUE_RENDER_QUALITY" resolve="VALUE_RENDER_QUALITY" />
               </node>
             </node>
+            <node concept="37vLTw" id="3iAZL$aoQFn" role="2Oq$k0">
+              <ref role="3cqZAo" node="2rPTijxxYI0" resolve="g2" />
+            </node>
           </node>
         </node>
         <node concept="3clFbH" id="3iAZL$aoPeK" role="3cqZAp" />
diff --git a/scripts/build.xml b/scripts/build.xml
index c9d27fac2..708fc9550 100644
--- a/scripts/build.xml
+++ b/scripts/build.xml
@@ -180,6 +180,9 @@
       <library file="${artifacts.mps}/languages/runtimes/jetbrains.mps.dataFlow.runtime.jar" />
       <library file="${artifacts.mps}/languages/runtimes/jetbrains.mps.findUsages.runtime.jar" />
       <library file="${artifacts.mps}/languages/runtimes/jetbrains.mps.lang.behavior.api.jar" />
+      <library file="${artifacts.mps}/languages/runtimes/jetbrains.mps.lang.feedback.context.jar" />
+      <library file="${artifacts.mps}/languages/runtimes/jetbrains.mps.lang.feedback.problem.legacy-constraints.jar" />
+      <library file="${artifacts.mps}/languages/runtimes/jetbrains.mps.lang.feedback.problem.rt.jar" />
       <library file="${artifacts.mps}/languages/runtimes/jetbrains.mps.lang.migration.runtime.jar" />
       <library file="${artifacts.mps}/languages/runtimes/jetbrains.mps.lang.smodel.query.runtime.jar" />
       <library file="${artifacts.mps}/languages/runtimes/jetbrains.mps.refactoring.runtime.jar" />