Question: What is a "labeled" newsgroup?

In Matt Messina <mes...@umich.edu> writes:
>Subject: Talk: IDs
[huge parts of ID-talk with Bob deleted]
>Identifiers in this group are unique in the sense that they can change
>throughout a thread (REQUEST, GIF, LINE), whereas identifiers in
>rec.arts.tv.soaps, the canonical example of a labeled newsgroup, don't.
>This presents a problem, as some newsreaders thread by Subject rather than
>by References, but I don't see any way around that.

... could you please tell me what a "labeled" newgroup is? I just don't 
know.

Thanx,



--

                .odbo.
            .od88888888bo.                  Paul Foerster
        .od8888888888888888bo.
    .od888888888888888888888888bo.          pau...@heino.ibh.rwth-aachen.de
 od88888888888888888888888888888888bo
  `~888888888888888888888888888888~'
     `~888888888888888888888888~'|          "Beam me up Scotty, there's no
        `~888888888888888888~'   |              intelligent life down here!"
          |`~888888888888~'|     |
          \   `~888888~'   /     A
           `-_   `~~'   _-'      H
              `--____--'

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