(partial draft) directions for homework assignment 3

projects/Assignments/homework3/README.md

+# Homework Assignment 3 (draft)
+
+1. Add X3D-Edit as Netbeans Plugin from https://savage.nps.edu/X3D-Edit/#Downloads
+
+1. Checkout Open-DIS-Java library from https://github.com/open-dis/open-dis-java
+
+1. Plan a track of interest...
+
+1. Modify example file...
+
+1. Generate PDUs...
+
+1. Record PDU file...
+
+1. Playback PDU file...
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