Score File Syntax A Programmers Guide to Gnus Ranges
Internally Gnus uses a format for storing article headers that corresponds to the NOV format in a mysterious fashion. One could almost suspect that the author looked at the NOV specification and just shamelessly stole the entire thing, and one would be right.
Header is a severely overloaded term. ``Header'' is used in
RFC1036 to talk about lines in the head of an article (e.g.,
From). It is used by many people as a synonym for
``head''---``the header and the body''. (That should be avoided, in my
opinion.) And Gnus uses a format internally that it calls ``header'',
which is what I'm talking about here. This is a 9-element vector,
basically, with each header (ouch) having one slot.
These slots are, in order:
xref. There are macros for accessing and setting these
slots---they all have predictable names beginning with
xref slot is really a
misc slot. Any extra info will
be put in there.