This standard runtime function places a check next to a pulldown menu command when it is displayed.
The application program must set the name of the menu command to be checked in RMP--COMMAND-NAME.
This standard runtime function is valid only for pulldown menu commands that can be checked.
An inverse standard runtime function, UNCHECK MENU OPTION is also available.
|The function executed successfully.
|The panel is not in this library
|The library does not exist.
|A COBOL input/output error was encountered on the panel library during execution of this function. To determine the exact nature of the I/O error, use the C$RERR subprogram.
|The menu command name is invalid.