Why CALL?

• The CALL statement allows parameters to be passed on the command line.

• SUBROUTINEs act like another procedure depth. (Can be useful when you don’t want local symbols to remain when the subroutine completes.)

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The CALL statement allows parameters to be passed to the SUBROUTINE.

SUBROUTINEs act like another procedure depth. Local symbols are local to the subroutine and global symbols are visible to the SUBROUTINE.