Identifying a program

You can use the optional AUTHOR, INSTALLATION, DATE-WRITTEN, and DATE-COMPILED paragraphs for descriptive information about a program. The data you enter in the DATE-COMPILED paragraph is replaced with the latest compilation date.

IDENTIFICATION DIVISION.
Program-ID.    Helloprog.
Author.        A. Programmer.
Installation.  Computing Laboratories.
Date-Written.  09/04/2019.
Date-Compiled. 09/08/2019.

Use the PROGRAM-ID paragraph to name your program. The program-name that you assign is used in these ways:

• Other programs use that name to call your program.
• The name appears in the header on each page, except the first, of the program listing that is generated when you compile the program.
• If you use the NAME compiler option, the name is placed on the NAME binder (linkage-editor) control statement to identify the object module that the compilation creates.
  Tip: Do not use program-names that start with prefixes used by IBM® products. If you use program-names that start with any of the following prefixes, your CALL statements might resolve to IBM library or compiler routines rather than to your intended program:
  • AFB
  • AFH
  • CBC
  • CEE
  • CEH
  • CEL
  • CEQ
  • CEU
  • DFH
  • DSN
  • EDC
  • FOR
  • IBM
  • IFY
  • IGY
  • IGZ
  • ILB