1 GOSUBTransfers control to a labeled subroutine in a command procedure without creating a new procedure level. Format GOSUB label 2 Parameter label Specifies a label of 1 to 255 alphanumeric characters that appears as the first item on a command line. A label may not contain embedded blanks. When the GOSUB command is executed, control passes to the command following the specified label. The label can precede or follow the GOSUB statement in the current command procedure. When you use a label in a command procedure, it must be terminated with a colon (:). If you use duplicate labels, control is always given to the label most recently read by DCL. 2 Example $! $! GOSUB.COM $! $ SHOW TIME $ GOSUB TEST1 $ WRITE SYS$OUTPUT "success completion" $ EXIT $! $! TEST1 GOSUB definition $! $ TEST1: $ WRITE SYS$OUTPUT "This is GOSUB level 1." $ GOSUB TEST2 $ RETURN %X1 $! $! TEST2 GOSUB definition $! $ TEST2: $ WRITE SYS$OUTPUT "This is GOSUB level 2." $ GOSUB TEST3 $ RETURN $! $! TEST3 GOSUB definition $! $ TEST3: $ WRITE SYS$OUTPUT "This is GOSUB level 3." $ RETURN This sample command procedure shows how to use the GOSUB command to transfer control to labeled subroutines. The GOSUB command transfers control to the subroutine labeled TEST1. The procedure executes the commands in subroutine TEST1, branching to the subroutine labeled TEST2. The procedure then executes the commands in subroutine TEST2, branching to the subroutine labeled TEST3. Each subroutine is terminated by the RETURN command. After TEST3 is executed, the RETURN command returns control back to the command line following each calling GOSUB statement. At this point, the procedure has been successfully executed.