6591c9e4_rel_values___Microformats_Wiki___specification_where_possible_
[Keyword] bookmark [Effect on link] not allowed [Effect on a, area] allowed HTML4 Link types
Refers to a bookmark. A bookmark is a link to a key entry point within an extended document. The title attribute may be used, for example, to label the bookmark. Note that several bookmarks may be defined in each document.
existing rel values · Microformats Wiki
Brief description (from the relevant specification where possible)