ILBOBEG

ILBOBEG is a COBOL routine that:

  • Initializes COBOL library subroutines if the NORES option is in effect. (When RES is in effect, INIT2 and ILBONTR0 perform this function.)

  • Issues messages.

  • Performs termination functions.

  • Determines which program exit to take.

If the Subroutine Communications Area (SUBCOM) has not been link-edited, ILBOBEG loads the area and checks whether its calling program is the main program or a subprogram.

Reference Sources

IBM OS/VS COBOL Subroutine Library Program Logic, LY28-6425.

IBM OS/VS COBOL Compiler Program Logic, LY28-6486.