diff --git a/docs/build/version_3.3.html b/docs/build/version_3.3.html
index 474698e..216f181 100644
--- a/docs/build/version_3.3.html
+++ b/docs/build/version_3.3.html
@@ -1,18 +1,20 @@
+
 <!DOCTYPE html>
 
-<html lang="en" data-content_root="./">
+<html xmlns="http://www.w3.org/1999/xhtml">
   <head>
-    <meta charset="utf-8" />
-    <meta name="viewport" content="width=device-width, initial-scale=1.0" /><meta name="viewport" content="width=device-width, initial-scale=1" />
+    <meta charset="utf-8" /><meta name="generator" content="Docutils 0.17.1: http://docutils.sourceforge.net/" />
 
     <title>version 3.3 changes &#8212; cf-plot 3.3.0 documentation</title>
-    <link rel="stylesheet" type="text/css" href="_static/pygments.css?v=fa44fd50" />
-    <link rel="stylesheet" type="text/css" href="_static/classic.css?v=97decc96" />
-    <link rel="stylesheet" type="text/css" href="_static/graphviz.css?v=eafc0fe6" />
+    <link rel="stylesheet" href="_static/classic.css" type="text/css" />
+    <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
+    <link rel="stylesheet" type="text/css" href="_static/graphviz.css" />
     
-    <script src="_static/documentation_options.js?v=3eb8911e"></script>
-    <script src="_static/doctools.js?v=888ff710"></script>
-    <script src="_static/sphinx_highlight.js?v=dc90522c"></script>
+    <script id="documentation_options" data-url_root="./" src="_static/documentation_options.js"></script>
+    <script src="_static/jquery.js"></script>
+    <script src="_static/underscore.js"></script>
+    <script src="_static/doctools.js"></script>
+    <script src="_static/language_data.js"></script>
     
     <link rel="index" title="Index" href="genindex.html" />
     <link rel="search" title="Search" href="search.html" /> 
@@ -23,8 +25,7 @@ <h3>Navigation</h3>
         <li class="right" style="margin-right: 10px">
           <a href="genindex.html" title="General Index"
              accesskey="I">index</a></li>
-        <li class="nav-item nav-item-0"><a href="index.html">cf-plot 3.3.0 documentation</a> &#187;</li>
-        <li class="nav-item nav-item-this"><a href="">version 3.3 changes</a></li> 
+        <li class="nav-item nav-item-0"><a href="index.html">cf-plot 3.3.0 documentation</a> &#187;</li> 
       </ul>
     </div>  
 
@@ -34,10 +35,10 @@ <h3>Navigation</h3>
           <div class="body" role="main">
             
   <section id="version-3-3-changes">
-<span id="version-3-3"></span><h1>version 3.3 changes<a class="headerlink" href="#version-3-3-changes" title="Link to this heading">¶</a></h1>
-<section id="ugrid-support-added">
-<h2>0. Ugrid support added<a class="headerlink" href="#ugrid-support-added" title="Link to this heading">¶</a></h2>
-<p>Ugrid support added</p>
+<span id="version-3-3"></span><h1>version 3.3 changes<a class="headerlink" href="#version-3-3-changes" title="Permalink to this headline">¶</a></h1>
+<section id="ugrid-support-updated">
+<h2>0. UGRID support updated<a class="headerlink" href="#ugrid-support-updated" title="Permalink to this headline">¶</a></h2>
+<p>UGRID support updated</p>
 <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">Done</span>
 </pre></div>
 </div>
@@ -45,7 +46,6 @@ <h2>0. Ugrid support added<a class="headerlink" href="#ugrid-support-added" titl
 </section>
 
 
-            <div class="clearer"></div>
           </div>
         </div>
       </div>
@@ -75,13 +75,12 @@ <h3>Navigation</h3>
         <li class="right" style="margin-right: 10px">
           <a href="genindex.html" title="General Index"
              >index</a></li>
-        <li class="nav-item nav-item-0"><a href="index.html">cf-plot 3.3.0 documentation</a> &#187;</li>
-        <li class="nav-item nav-item-this"><a href="">version 3.3 changes</a></li> 
+        <li class="nav-item nav-item-0"><a href="index.html">cf-plot 3.3.0 documentation</a> &#187;</li> 
       </ul>
     </div>
     <div class="footer" role="contentinfo">
-    &#169; Copyright 2024, Sadie Bartholomew.
-      Created using <a href="https://www.sphinx-doc.org/">Sphinx</a> 7.2.6.
+        &#169; Copyright 2024, Sadie Bartholomew.
+      Created using <a href="http://sphinx-doc.org/">Sphinx</a> 2.4.5.
     </div>
   </body>
 </html>
\ No newline at end of file
diff --git a/docs/build/versions.html b/docs/build/versions.html
index 4af18f1..aaa0e9d 100644
--- a/docs/build/versions.html
+++ b/docs/build/versions.html
@@ -1,18 +1,20 @@
+
 <!DOCTYPE html>
 
-<html lang="en" data-content_root="./">
+<html xmlns="http://www.w3.org/1999/xhtml">
   <head>
-    <meta charset="utf-8" />
-    <meta name="viewport" content="width=device-width, initial-scale=1.0" /><meta name="viewport" content="width=device-width, initial-scale=1" />
+    <meta charset="utf-8" /><meta name="generator" content="Docutils 0.17.1: http://docutils.sourceforge.net/" />
 
     <title>Planned releases &#8212; cf-plot 3.3.0 documentation</title>
-    <link rel="stylesheet" type="text/css" href="_static/pygments.css?v=fa44fd50" />
-    <link rel="stylesheet" type="text/css" href="_static/classic.css?v=97decc96" />
-    <link rel="stylesheet" type="text/css" href="_static/graphviz.css?v=eafc0fe6" />
+    <link rel="stylesheet" href="_static/classic.css" type="text/css" />
+    <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
+    <link rel="stylesheet" type="text/css" href="_static/graphviz.css" />
     
-    <script src="_static/documentation_options.js?v=3eb8911e"></script>
-    <script src="_static/doctools.js?v=888ff710"></script>
-    <script src="_static/sphinx_highlight.js?v=dc90522c"></script>
+    <script id="documentation_options" data-url_root="./" src="_static/documentation_options.js"></script>
+    <script src="_static/jquery.js"></script>
+    <script src="_static/underscore.js"></script>
+    <script src="_static/doctools.js"></script>
+    <script src="_static/language_data.js"></script>
     
     <link rel="index" title="Index" href="genindex.html" />
     <link rel="search" title="Search" href="search.html" /> 
@@ -23,8 +25,7 @@ <h3>Navigation</h3>
         <li class="right" style="margin-right: 10px">
           <a href="genindex.html" title="General Index"
              accesskey="I">index</a></li>
-        <li class="nav-item nav-item-0"><a href="index.html">cf-plot 3.3.0 documentation</a> &#187;</li>
-        <li class="nav-item nav-item-this"><a href="">Planned releases</a></li> 
+        <li class="nav-item nav-item-0"><a href="index.html">cf-plot 3.3.0 documentation</a> &#187;</li> 
       </ul>
     </div>  
 
@@ -34,7 +35,7 @@ <h3>Navigation</h3>
           <div class="body" role="main">
             
   <section id="planned-releases">
-<h1>Planned releases<a class="headerlink" href="#planned-releases" title="Link to this heading">¶</a></h1>
+<h1>Planned releases<a class="headerlink" href="#planned-releases" title="Permalink to this headline">¶</a></h1>
 <ul class="simple">
 <li><p>0.3 first version on github</p></li>
 <li><p>0.4 gset, axes - setting plot limits and plotting axes</p></li>
@@ -61,7 +62,7 @@ <h1>Planned releases<a class="headerlink" href="#planned-releases" title="Link t
 <li><p>3.0 Port to Python 3 and Mac OSX  <a class="reference internal" href="version_3.0.html#version-3-0"><span class="std std-ref">version 3.0 changes</span></a></p></li>
 <li><p>3.1 UGRID support <a class="reference internal" href="version_3.1.html#version-3-1"><span class="std std-ref">version 3.1 changes</span></a></p></li>
 <li><p>3.2 Rolling bugfix version <a class="reference internal" href="version_3.2.html#version-3-2"><span class="std std-ref">version 3.2 changes</span></a></p></li>
-<li><p>3.2 Ugrid support added <a class="reference internal" href="version_3.3.html#version-3-3"><span class="std std-ref">version 3.3 changes</span></a></p></li>
+<li><p>3.3 UGRID support updated <a class="reference internal" href="version_3.3.html#version-3-3"><span class="std std-ref">version 3.3 changes</span></a></p></li>
 </ul>
 <p>Further functionality may be added on request - please email &lt;<a class="reference external" href="mailto:sadie&#46;bartholomew&#37;&#52;&#48;ncas&#46;ac&#46;uk">sadie<span>&#46;</span>bartholomew<span>&#64;</span>ncas<span>&#46;</span>ac<span>&#46;</span>uk</a>&gt; with details.</p>
 <div class="line-block">
@@ -77,7 +78,6 @@ <h1>Planned releases<a class="headerlink" href="#planned-releases" title="Link t
 </section>
 
 
-            <div class="clearer"></div>
           </div>
         </div>
       </div>
@@ -107,13 +107,12 @@ <h3>Navigation</h3>
         <li class="right" style="margin-right: 10px">
           <a href="genindex.html" title="General Index"
              >index</a></li>
-        <li class="nav-item nav-item-0"><a href="index.html">cf-plot 3.3.0 documentation</a> &#187;</li>
-        <li class="nav-item nav-item-this"><a href="">Planned releases</a></li> 
+        <li class="nav-item nav-item-0"><a href="index.html">cf-plot 3.3.0 documentation</a> &#187;</li> 
       </ul>
     </div>
     <div class="footer" role="contentinfo">
-    &#169; Copyright 2024, Sadie Bartholomew.
-      Created using <a href="https://www.sphinx-doc.org/">Sphinx</a> 7.2.6.
+        &#169; Copyright 2024, Sadie Bartholomew.
+      Created using <a href="http://sphinx-doc.org/">Sphinx</a> 2.4.5.
     </div>
   </body>
 </html>
\ No newline at end of file
