The features described in this topic are obsolete
and should not be used in new IDL code.

Documentation for Older Obsolete Routines

Routines that became obsolete in IDL version 4.0 or earlier are not documented in this book or in the IDL Online Help. However, if the routine is written in the IDL language, you can inspect the documentation header of the .pro file, or use the DOC_LIBRARY routine. The .pro files for obsolete routines are located in the obsolete subdirectory of the lib directory of the IDL distribution.