IB Statements/messagesub

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'''MESSAGESUB statement''' '''Syntax:''' MESSAGESUB statement-label '''Discussion:''' The MESSAGESUB statement sets a branch-to address for the current program. If this program is interrupted while running (via an INTERRUPT statement from another program), program flow will be transferred to the statement-label specified in the MESSAGESUB statement. When a RETURN statement is executed after the MESSAGESUB path has been taken, program flow continues at the statement immediately following the statement where the INTERRUPT occurred. Example: MESSAGESUB 9999 ! Set MESSAGESUB label . . . 9999 MESSAGESUB 9999 ! Reset MESSAGESUB label RETURN

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