• Writing a SUBROUTINE:
  • SUBROUTINES are extremely similar to PROCEDURES except that results declared in a SUBROUTINE are not visible to the main macro, as they are in PROCEDURES. The main macro results are still visible in the SUBROUTINE.
  • Note: SUBROUTINES and PROCEDURES share the same namespace (i.e. You can't have both a procedure named DOSTUFF and a subroutine named DOSTUFF).