This is a process control command, i.e., it will control whether to exit from a WHILE loop. This is one part of a complete command structure.
|EXIT_IF lexpr||Required - If the expression resolves to .TRUE. then the program will transfer control to the line following the appropriate ENDW (Endwhile) command.|
For more information on the different structured programming commands, and the EXIT_IF command in particular, please see Structured Programming Commands.