updated links

README.md

@@ -3,8 +3,8 @@
 This course project contains a variety of original assets for [assignments](assignments), [examples](assignments), [presentations](presentations), and [specifications](specifications) download directions.
 
 Key course sites:
-* [MV3500 Course Syllabus](https://gitlab.nps.edu/Savage/NetworkedGraphicsMV3500/blob/master/MV3500NetworkedGraphicsSyllabus2020JulySeptember.pdf)
-* [NPS CLE Sakai site](https://cle.nps.edu/portal/site/54028fd0-8f4b-4a48-bc2c-1381df347fa6) for MV3500 course
+* [MV3500 Course Syllabus](https://gitlab.nps.edu/Savage/NetworkedGraphicsMV3500/-/raw/master/MV3500DistributedSimulationSyllabus2023MarchJune.pdf)
+* [NPS CLE Sakai site](https://cle.nps.edu/portal/site/6e9fe3d2-37ad-4dd1-83a3-39e8d3089435) for MV3500 course
 * [NPS GitLab site: NetworkedGraphicsMV3500](https://gitlab.nps.edu/Savage/NetworkedGraphicsMV3500)
 <!-- * [Wikipedia book: Networked_Modeling_and_Simulation](https://en.wikipedia.org/wiki/Book:Networked_Modeling_and_Simulation) -->
 * [Savage Developers Guide: telnet Network Protocol](https://savage.nps.edu/Savage/developers.html#telnet)
@@ -12,15 +12,15 @@ Key course sites:
 References and resources:
 * [GitLab Flavored Markdown (GFM)](https://docs.gitlab.com/ee/user/markdown.html)
 * [Java Archive (.jar)](https://docs.oracle.com/javase/tutorial/deployment/jar/basicsindex.html) for sharable/runnable software libraries
-* [Java SE JDK download](https://openjdk.java.net) (OpenJDK 18) or
-  [Java SE JDK download](http://www.oracle.com/technetwork/java/javase/downloads/index.html) (OracleJDK 18)
-* [Netbeans](http://www.netbeans.org) (version 13), [Using Git Support in NetBeans IDE](https://netbeans.org/kb/docs/ide/git.html) 
+* [Java SE JDK download](https://openjdk.java.net) (OpenJDK 20) or
+  [Java SE JDK download](https://www.oracle.com/technetwork/java/javase/downloads/index.html) (OracleJDK 20)
+* [Netbeans](http://www.netbeans.org) (version 17), [Using Git Support in NetBeans IDE](https://netbeans.org/kb/docs/ide/git.html)
 and [Video of Cloning a Git Repository Using NetBeans IDE](https://netbeans.org/kb/docs/ide/git_nb_ssh_screencast.html)
 * [Open-DIS Repository](https://github.com/open-dis) (specifically [opendis7-java](https://github.com/open-dis/opendis7-java)) and [Distributed Interactive Simulation: The Missing Handbook](https://github.com/open-dis/DISTutorial/blob/master/README.md)
 * [Savage Developers Guide](https://savage.nps.edu/Savage/developers.html) resources for [Cygwin](https://savage.nps.edu/Savage/developers.html#Cygwin), [DIS](https://savage.nps.edu/Savage/developers.html#DIS) and [telnet](https://savage.nps.edu/Savage/developers.html#telnet)
 * [Sequence Diagram](https://en.wikipedia.org/wiki/Sequence_diagram) and [Timing Diagram (UML)](https://en.wikipedia.org/wiki/Timing_diagram_(Unified_Modeling_Language)) on Wikipedia
 * [WireShark](https://wireshark.org) and [WireShark Tutorial for Beginners](https://www.youtube.com/watch?v=TkCSr30UojM) video by Anson Alexander
-* [X3D-Edit](https://savage.nps.edu/X3D-Edit/#Downloads) as Netbeans Plugin including [DIS PDU Player/Recorder](https://savage.nps.edu/X3D-Edit/images/DisPlayerRecorderPanel.png) and [ESPDU Generator](https://savage.nps.edu/X3D-Edit/images/DisEspduTestPanelDemo.png) (currently requires Netbeans version 12.4)
-* [X3D for Web Authors](http://x3dgraphics.com) book, examples and slidesets including [X3D Distributed Interactive Simulation (DIS)](http://x3dgraphics.com/slidesets/X3dForAdvancedModeling/DistributedInteractiveSimulation.pdf)
+* [X3D-Edit](https://savage.nps.edu/X3D-Edit) as Netbeans Plugin including [DIS PDU Player/Recorder](https://savage.nps.edu/X3D-Edit/images/DisPlayerRecorderPanel.png) and [ESPDU Generator](https://savage.nps.edu/X3D-Edit/images/DisEspduTestPanelDemo.png) (currently requires Netbeans version 12.4)
+* [X3D for Web Authors](https://x3dgraphics.com) book, examples and slidesets including [X3D Distributed Interactive Simulation (DIS)](https://x3dgraphics.com/slidesets/X3dForAdvancedModeling/DistributedInteractiveSimulation.pdf)
 
 Contact: Don Brutzman, brutzman@nps.edu