VMS Help Lexicals, F$VERIFY, Arguments  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 procedure-value

    Specifies an integer expression with a value of 1 to turn
    procedure verification on, or a value of 0 to turn procedure
    verification off.

    When procedure verification is on, each DCL command line in the
    command procedure is displayed on the output device. Procedure
    verification allows you to verify that each command is executing
    correctly.

    If you use the procedure-value argument, the function first
    returns the current procedure verification setting. Then the
    command interpreter turns the procedure verification on or off,
    as specified by the argument.

 image-value

    Specifies an integer expression with a value of 1 to turn image
    verification on, or a value of 0 to turn image verification off.

    When image verification is on, data lines in the command
    procedure are displayed on the output device.