Computing-Infrastructure-and-Support.md

@@ -9,6 +9,10 @@ analysis system infrastructure is hosted on [github](https://github.com).
 
 It's an old need, with many solutions.  Here you'll find setup instructions for mounting project space as if it were a local drive on computer.
 
+## [Makefile Conventions](Makefile-Conventions)
+
+Guidelines for environment variables (actually makefile variables).  Please comment.
+
 ## [PARCS](https://space.physics.uiowa.edu/parcs/)
 
 The Physics & Astronomy Research Computing Service provides user