From: Robert Monfera
Subject: Keyword arguments in series functions
Date: 
Message-ID: <38356AD2.EE57E95C@fisec.com>
Hello again, 

Here's another question to the series experts (Raymond, Lieven,...).

I'd like to have &key, &rest, &allow-other-keys and &aux in the lambda
list of my series functions.  I do not need them to carry series, but
ordinary values like stream or filename.

Waters (CLtL2) says: