/*
   What is a 'Global Conformed Line'?

   A Global Conformed Line (hereafter GCL) is a way of communicating
   terse information between modules.  The concept is original to Chris
   Lewis who often used the technique in software he built.

   The form of a Global Conformed Line is:
.        rc (xef) shortmsg (xef) longmsg (xef) info
   The separator is a 'EF'x character because it cannot be entered from
   a keyboard and therefore must have been sent from other REXX code.
   The components of the GCL are
.        rc        the return code from the subroutine
.        shortmsg  equivalent to ZEDSMSG
.        longmsg   equivalent to ZEDLMSG
.        info      any additional information the subroutine sends

*/