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From: Nevin Kapur <nevin@jhu.edu>
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Subject: Is an Xref header present in all mail handled by Gnus?
Date: Mon, 30 Jul 2001 14:50:37 -0400
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Hi all,

I'd like to know if I can rely on the presence of an Xref: header in
all mails in nnml and nnfolder backends? Are there any variables that
a user can set to disable the generation of this header? What is the
format of this line for mail? From nnmail.el, I gather it looks like.

Xref: (system-name) (list of group-name:article number)

I couldn't find this information in the manual. My apologies if it's
someplace obvious.

-- 
Nevin