Existing Lisp

[Daniel L. Weinreb <DLW at MIT-AI>]

"Doing something" refers to the process associated with the listener;
Existing Lisp will try to find one that is sitting there in read,
ideally.  The whole idea of Existing Lisp is to be easy and fast,
which is why you don't get a menu; the meaning is "pick any
one of the random existing Lisps, since they are all the same
anyway".  I think that this turned out not to be a very useful command;
its only function is to avoid creation and/or proliferation of windows,
but I think that's not too important and that it's too complicated for
{the user interface.  The call key has the same problems.