[Resending this to the list now that the problem that prevented it from
accepting any mail has been fixed.]
Andy Mabbett wrote:
Use-cases for machine-readable date mark-up are many: as well as
the aforesaid calendar interactions, they can be used for
sorting; for searching ("find me all the pages about events in
1923" — recent developments in Yahoo's YQL searching API
(which now supports searching for microformats):
<http://developer.yahoo.net/blog/archives/2009/01/yql_with_microformats.html>
have opened up a whole new set of possibilities, which is only
just beginning to be explored). They can be mapped visually on a
"SIMILE"
<http://simile.mit.edu/timeline/>
or similar time-line.
Neither of those appear to be using BCE dates, non-Gregorian calendars
or imprecise dates. It's not clear how they are use cases for the
features that you are asking for.
--
Lachlan Hunt - Opera Software
http://lachy.id.au/
http://www.opera.com/
