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Posted by Mark Parnell on 01/31/06 06:49
Deciding to do something for the good of humanity, »Q« <boxcars@gmx.net>
declared in alt.html:
> Is the URI actually necessary?
For validation? No, as long as you are using a known doctype. If you are
using a custom DTD, you will need to provide a URI, otherwise the
validator doesn't know what to check the document against.
For browsers? Not necessary as such, but certainly it can be a good idea
in some cases, depending on the doctype used. A doctype declaration (for
some doctypes, e.g. HTML4.01 Transitional) without a URI can trigger
quirks mode in some browsers. More info:
http://gutfeldt.ch/matthias/articles/doctypeswitch.html
> Desirable?
As above.
> Are there any agents which download it?
Validators will if they don't recognise the doctype. AFAIK no other user
agent would bother.
--
Mark Parnell
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