diff --git a/CHANGELOG.md b/CHANGELOG.md
index 50e576a..131bab4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Change Log
 
+## Next
+
+- Provides a hover for some DICOM keywords and reserved UIDs
+  that are hard to remember, such as Transfer Syntax UID.
+- Support for (retired) Group Length element (gggg,0000).
+
 ## 1.0.3 (2018-07-08)
 
 - Documentation and changelog fix.
diff --git a/README.md b/README.md
index 7583c93..fc65b31 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,8 @@ Use the context menu on a DICOM file and select "DICOM: Dump DICOM tags".
 
 - Dumps all DICOM tags in human-readable format (except binary data).
 - Understands value representation (VRs) of most standard DICOM tags.
+- Provides a hover for some hard-to-remember DICOM keywords and UIDs.<br>
+  ![Screenshot](https://raw.githubusercontent.com/smikitky/vscode-dicom-dump/master/doc/screenshot-values.png)
 - Basic support for character encodings.
 - 100% JavaScript. Does not require any external binary dependencies like DCMTK.
 
diff --git a/doc/screenshot-values.png b/doc/screenshot-values.png
new file mode 100644
index 0000000..17b23a6
Binary files /dev/null and b/doc/screenshot-values.png differ