undeclaring a defconstant

[rsl@MAX-FLEISCHER.ILA-SF.Dialnet.Symbolics.COM (Richard Lamson)]

    Date: Fri, 9 Feb 90 14:31 PST
    From: Scott Fisher <Fisher@ALAN.kahuna.decnet.lockheed.com>

	    A SCL question:

	    If one declares foo to be a constant via defconstant,
	how does one undeclare this?

How about m-X Kill Definition in the editor?  Here is what it does for
DEFCONSTANT definitions:

   (LT:UNDEFINE-VARIABLE 'FOO)

In general, m-X Kill Definition is a good thing to try when you want to
remove anything from the world.  It doesn't always work, but when it does,
it's the right thing.