Taken off www-style since it's so off-topic.
On Thu, 30 Nov 2006, Andrew Fedoniouk wrote:
>
> Ian, what does this "backward compatibility" mean?
Language v1 is backwards compatible with language v2 if:
* Documents written in language v1 work in UAs for language v2 the
same way they do in UAs written for language v1.
* Documents written in language v1 can have features from language v2
added without affecting parts of the document that do not use those
features.
* Documents written in language v2 can display in UAs for language v1
and still be usable (though maybe not all the functionality will be
present).
--
Ian Hickson U+1047E )\._.,--....,'``. fL
http://ln.hixie.ch/ U+263A /, _.. \ _\ ;`._ ,.
Things that are impossible just take longer. `._.-(,_..'--(,_..'`-.;.'
