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Calls the cursor, and executes the specified command each time it is
pressed. The command can be a procedure (e.g. @my_look) and can test the
pressed character which is added at the end as first argument. Usual
exit keys ("E", right-clic, ...) or "*" can be used to exit. For exam-
ple, a calling session may look like:
GREG-PROMPT> LOOK "SAY You pressed "
You pressed Q
if "Q" and then "E" have been pressed.