[Typo3-dev] xhtml compliancy

[Robert Markula]

Martin Kutschker wrote:
(...)
> "deprecated" doesn't mean it's invalid. I'm interested in the 
> differences where a document that's valid 1.0 transitional is an invalid 
> 1.0 strict.
Deprecated elements are most likely to be removed in the following versions.

> Eg the removal (not deprecating) of the lang attribute (xhtml 1.0) in 
> favour of xml:lang (xhtml 1.1) is a real compliancy issue.

> Ah, I found it! It's the frame stuff that's missing: for frameset and 
> frame use xhtml frameset, iframe and noframes are missing altogether.
Finally they are removed! ;)

> I'm looking for such stuff. Anything else?

When reviewing the list I noticed that I refered it to HTML 4.01 strict, 
instead of XHTML 1.0 strict. Sorry, my mistake.

Okay, I'm too tired to make a new list, here are some good Websites 
which may help you:

- http://www.w3schools.com/xhtml/xhtml_reference.asp (Tag reference 
including compatibility issues on the various browsers and the DTD where 
they are allowed (strict, transitional or frameset)
- http://www.zvon.org/xxl/xhtmlReference/Output/comparison.html (Listing 
of removed attributes and elements in strict)
- http://www.zvon.org/xxl/xhtmlReference/Output/comparison.html (Very 
detailed list about the differences between transitional and strict)

Hope that helps :-)