This is the IDL-CDF V3.6.4 patch for IDL 8.5 and older for all systems. Use 
another folder if you use IDL 8.6.

This directory contains the following files: (Text files marked with "**" are
either brand new or modified modules, or modified the text information.  Read 
the individual help text file for info.)

AAREADME.txt          This is the readme file you are viewing.

CHANGES.txt           The changes log for the different versions.

showcdfversion.pro    The IDL script will show the versions of the IDL-CDF
                      interface (.dlm) and the underlying CDF library.

idl_cdf.dlm           The main CDF interface module.

CDF_*.txt             The help info for each and every module that IDL provides
                      for operating the CDF library/data. Currently, there are 
                      44 modules.

HOWTO-install.txt     The help info for installing the IDL patch and files.

linux                 The directory for modules for the linux box.

macosx                The directory for modules for the Mac OS X box.

solaris               The directory for modules for the SUN/Solaris box.

windows               The directory for modules for the Windows box.