From: Gerald Smith
Subject: Paul Graham's Macros
Date: 
Message-ID: <ugn4PhGy8GA.313@nih2naac.prod2.compuserve.com>
Anyone besides me who is interested in puzzling out how to use the 
"continuation" macros in Paul Graham's book named "On Lisp".

They are very complex, and few examples are given in the book 
relative to how to actually utilize them.