COMMAND NAME:

        EXIT
        QUIT

USAGE:
        EXIT

        Causes the program to terminate; control returns to the parent
process (usually the operating system).  If modifications to a
design have been made, but not written to permanent storage (disk)
you will be prompted to save the data before terminating.  The
answer must be either "yes" (save changes) or "no"
(no changes written).  You may abort the quit by entering a ^C.

