Existing Lisp?

[David A. Moon <MOON at MIT-MC>]

    Date: 17 DEC 1981 1342-PST
    From: LEBRUN at PARC-MAXC
    Subject:  Existing Lisp?
    To:   BUG-LISPM at MIT-AI

    In System 78.17, ETHER 22.0, microcode 840, on Xerox Lisp Machine Two:

    I don't understand the behavior of the Existing Lisp option in the Split
    Screen menu (under the system menu).  It doesn't give a menu of choices
    and as likely as not makes a new Lisp Listener anyway.

It does the same thing as the CALL key; finds a Lisp listener which isn't
doing anything, or if there isn't one makes one.  I don't know whether
this is a good idea for either of these.