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From: "Stephen J. Turnbull" <stephen@xemacs.org>
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Subject: Re: substitute-key-definition vs. define-key MAP [remap ...]
Date: Sat, 24 Jul 2010 15:27:57 +0900
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David Kastrup writes:

 > I think a LISP-2 has both function and value cells associated with a
 > symbol (never mind print name and property list in that kind of
 > accounting), making Scheme a LISP-1.

The point is that there is a syntactic distinction, not that it
happens to be implemented as cells in the symbol structure.  For
example, some simple LISPs have only one cell, for the property list,
and all of the features you mention are implemented as properties.