Application-defined commands
Form requests are implemented as integers above
the low-level ETI (curses) maximum key value KEY_MAX.
A symbolic constant MAX_COMMAND is provided
so applications can implement their own commands without
conflicting with the ETI form or menu subsystems.
All ETI system form requests are greater than KEY_MAX and
less than or equal to MAX_COMMAND.
You should set your
application-defined commands to an integer greater than MAX_COMMAND.
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UnixWare 7 Release 7.1.4 - 27 April 2004