DCL_Command_Parameters

   Command procedures that use file names as parameters can produce
   different results in an ODS-5 environment.

   You can switch from the TRADITIONAL to the EXTENDED parse style,
   and this section describes the following areas that may be
   affected if you choose to do so:

   o  Command procedure file specification

   o  Case preservation and $FILE

   o  Ampersand versus apostrophe substitution