The software implementation of the underlying 3-D graphics library 
for Object Graphics in IDL is provided via version 4.0.1 of the
Mesa 3-D Graphics Library. Mesa is copyrighted by Brian Paul under the
terms of the GNU LIBRARY GENERAL PUBLIC LICENSE, found in the file
gnu_library_license.txt in this directory.

To comply with the terms of this license, RSI has taken the following steps:

	 - We obtained Mesa from the primary repository
	  
		http://sourceforge.net/projects/mesa3d

	   Any flags set by RSI to compile the library are noted below.

         - We agree to provide, upon your request, the machine-readable
           object code you need to link a new version of the Mesa library 
           with IDL.  You may submit such a request to RSI by sending 
           e-mail to support@ResearchSystems.com.

RSI Requirements for Compiling Mesa
-----------------------------------

   To ensure that the Mesa 3-D graphics libarary works with IDL, the following
   criteria must be met when compiling the library.

   1. Define the USE_MGL_NAMESPACE to the C macro preprocessor.
      This is done by adding:

          -DUSE_MGL_NAMESPACE

      to the CFLAGS line for your platform in the file called Make-config 
      in the Mesa distribution.

   2. Make a sharable version of the library for your platform.  If this 
      option applies to your platform, an explanation of how to do this 
      is found in the file called Makefile of the Mesa distribution.