Transcribed from an email on ISPF-L about a routine by Doug Nadel How to add characters so that ISPF edit recognizes them as belonging in a "word" as opposed to being a word separator

ADDCHAR.REXX

/* Rexx ispf edit macro to add characters to the meaning of word      */
/*                                                                    */
/* This changes internal tables to force specific characters to be    */
/* considered part of a word.  For example, In COBOL, The dash is     */
/* valid in a name.  If you have code                                 */
/*     MOVE ABC-DEF TO ABC.                                           */
/* and you issue                                                      */
/*     CHANGE ABC XYZ WORD                                            */
/* the result is                                                      */
/*     MOVE XYZ-DEF XYZ.                                              */
/* By using this command to allow dash to be part of a word, you'd    */
/* Get this resilt instead:                                           */
/*     MOVE ABC-DEF XYZ.                                              */
/* Add the characters you want to be part of a word below.  This      */
/* macro only needs to be run once per ISPF session but works fine    */
/* as an initial macro or session macro (see manual for ZUSERMAC)     */
/*--------------------------------------------------------------------*/
wordchars = "-_"
/*--------------------------------------------------------------------*/

Address isredit
"MACRO"

tldp = ptr(ptr(24 + ptr(112 + ptr(132 + ptr(540)))))
tablep = ptr(24 + ptr(20 + ptr(96 + ptr(56 + tldp))))
Do While wordchars <> ""
  Parse Var wordchars char 2 wordchars
  Call storage d2x(tablep + c2d(char)),1,"00"x
End
Return

ptr: Return c2d(bitand(storage(d2x(Arg(1)),4),"7FFFFFFF"x))