en2 0) (string-ref token2 1) #\:
                   (string-ref token2 2) (string-ref token2 3))))
             ((positive? timestamp)))
           timestamp))
</PRE>

<P>
AND-LET* is also similar to an "anaphoric AND" LISP macro [Rob Warnock,
comp.lang.scheme, 26 Feb 1998 09:06:43 GMT, Message-ID:
6d3bb3$3804h@fido.asd.sgi.com]. AND-LET* allows however more than one
intermediate result, each of which continues to be bound through the
rest of the form.


<H1>Specification</H1>

<H2><a name="and-let">Syntax 