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Date: Sat, 07 Dec 1996 14:29:47 -0800 (PST)
From: Chris Newman <Chris.Newman@innosoft.com>
Subject: Re: DRAFT-DRUMS-ABNF-03.txt
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On Sat, 7 Dec 1996, Kai Henningsen wrote:
> Hmmm ... maybe @number or %number?

I like %hh where h is a hex digit.  It has the advantage of being the
same format used in URLs.