Re: polyglot XHTML/HTML and <!DOCTYPE html about:legacy-compat>

in addition to Jirka's comments, you pretty much have to use a catalog
or some such anyway (in which case the about: URI is as resolvable as an
http one).

Even for DTD that are apparently resolvable such as

If you actually GET that URI more than a few times the W3C will cut you off
with a 503  code, to prevent their servers being overloaded

So the difference between an about: URI scheme and an http: one is not
as great as may seem.


Received on Saturday, 2 January 2010 20:50:11 UTC