Predefined_functions

   Predefined functions can be used to perform text processing operations,
   operate on file specifications and determine the origin of macros. Note
   that, predefined functions can only be used if extended syntax has been
   enabled (use /EXTENDED_SYNTAX qualifier when invoking MMS or, in
   DECwindows MMS, check the Extended Syntax check box in the Build
   Definitions/Directives Options dialog box).

   Where a parameter to a function is considered to be a list of words,
   a word is defined as any sequence of characters, not containing
   white-space characters, that is terminated by a white-space character
   or ')'. White-space characters are space and tab. Functions that
   generate word lists will produce lists that are white-space
   compressed (i.e. no leading or trailing spaces and a single space
   character between each word in the list).

Additional information available:

Text_operations File_operations Other_operations