Help message file used in MENU

The message source file help.msg:

.101
This is help about option 1
.102
This is help about help 
.103
This is help about My Menu

Compiling the message file:

$ fglmkmsg help.msg

Program using the .iem compiled message file.

MAIN
    OPTIONS
        HELP FILE "help.iem"
    MENU "Sample"
        COMMAND "Option 1" HELP 101
            DISPLAY "Option 1 chosen"
        COMMAND "Help"
            CALL SHOWHELP(103)
    END MENU
END MAIN