[whatwg] text/html conformance checkers and optional tag inference

Ian Hickson ian at hixie.ch
Wed Feb 28 17:49:00 PST 2007

On Fri, 8 Apr 2005, Henri Sivonen wrote:
> Does any What WG document specify what optional tag inference features a 
> conformance checker for the text/html flavor is required to implement 
> and what elements are required to be considered empty?

This is now defined here:


(Yes I know you know. But I'm replying to all these e-mails, since I 
promised I would...)

> Should What WG require tags that were optional in HTML 4 to be 
> mandatory?

Optional tags seem like quite a useful and harmless feature. The spec 
still allows them for now.

Ian Hickson               U+1047E                )\._.,--....,'``.    fL
http://ln.hixie.ch/       U+263A                /,   _.. \   _\  ;`._ ,.
Things that are impossible just take longer.   `._.-(,_..'--(,_..'`-.;.'

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