HP Integrity NonStop H-Series - Manual (Page 79)

Knowing All the Available Functions
Customizing TEDIT for a Columned List
058060 Tandem Computers Incorporated 3–13
If you don’t want to see any more information, press EXIT twice. EXIT
returns you to your file. Nothing has changed; the file looks the same as it
did before you pressed the HELP key. Do it now. If you did not type a
topic name on the response line, the following message appears on the
status line.
1) You didn't supply required information for the command C00.
Don’t worry about the message. The next time you press a function key,
the message goes away.