Describe relation to Open DIS in README

README.md

@@ -1,10 +1,22 @@
 # XMLPG (XML Multi-Language Protocol Generator)
 
-Define your binary protocol in an XML file and then use this tool to generate network message marshalling code for Java, C++, C#, Objective-C, Python, and JavaScript languages.
+Xmlpg allows you to describe a binary message protocol in an XML file and then generate source code to parse the messages in one or more programming languages; Java, C++, C#, Objective-C, Python, and JavaScript languages.
 
-An example XML specification file is [DIS2012.xml](DIS2012.xml).
+For info about the language see [XMLPG.md](XMLPG.md).
 
-For more info see [XMLPG.md](XMLPG.md).
+# Relation to Open DIS
+
+Xmlpg was used to auto-generate the initial source code for the PDU's of the following Open DIS projects:
+- [open-dis-java](https://github.com/open-dis/open-dis-java)
+- [open-dis-cpp](https://github.com/open-dis/open-dis-cpp)
+- [open-dis-javascript](https://github.com/open-dis/open-dis-javascript)
+- [open-dis-python](https://github.com/open-dis/open-dis-python)
+- [open-dis-csharp](https://github.com/open-dis/open-dis-csharp)
+- [open-dis-objectivec](https://github.com/open-dis/open-dis-objectivec)
+
+The original XML specification file for Open DIS is [DIS2012.xml](DIS2012.xml).
+This specification file and is not maintained.
+Any corrections to the generated Open DIS source code are now being made directly to the downstream projects referenced above.
 
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