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6.6 Advanced ED Commands CP/M 3 User's Guide
The Q (Quit) Command
A Q command abandons changes made since the beginning of the ED session and
exits ED. The Q command takes the form:
Q
followed by a carriage return.
When you enter a Q command, ED verifies that you want to abandon the changes
by asking
Q (Y/N)?
You must respond with either a Y or an N; if you press any other key, ED repeats
the question. When you enter Y, ED erases the temporary file, closes the source file,
and returns control to CP/M 3.
Note: you can enter a CTRL-Break or a CTRL-C to return control immediately to
CP/M 3. This does not give ED a chance to close the source or new files, but it
prevents ED from deleting any temporary files.
6.7 ED Error Messages
ED returns one of two types of error messages: an ED error message if ED cannot
execute an edit command, or a CP/M 3 error message if ED cannot read or write to
the specified file. An ED error message takes the form:
BREAK "x" AT c
where x is one ,f the symbols defined in the following table and c is the command
letter where the error occurred.
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