Some more info from the REXX folks: The savearea passed to programs invoked via ADDRESS LINK, LINKMVS, or LINKPGM was extended to pass a 144-byte savearea to the caller by APAR OA44581 (whenever that became available). Programs invoked as REXX functions or subroutines are still passed a 72-byte savearea (I don't know why they didn't similarly change that). This makes REXX LINK more compatible with REXX ATTACH -- the target routine in both cases gets a 144-byte savearea.
Peter Relson z/OS Core Technology Design
