dive into mark

As far as I can tell, it went like this:

1. Mark Nottingham wrote an RFC called Feed Paging and Archiving.
2. In order to publish an RFC through the IETF, you need to get your references in order.
3. Since feed paging and archiving can be added to an RSS feed, one of those references is RSS 2.0.
4. There appears to be a difference of opinion as to which of the many incompatible RSS 2.0 specs should be cited. Hilarity ensues.
5. As of this writing, the citation will look like this.

As fate would have it, I read the latest feed-history draft just last week, after someone asked about adding support for it in feedparser. This problem actually occurred to me in passing. Then I took a nice satisfying shit and forgot all about it.