@PeterT
Thanks. Now I got it. Sorry that I'v been so slow on the uptake.
@William Ockham
I disagree with your assumptions (less costs, selling more).
And I disagree with your assumptions of the number of users who would benefit from a better markup.
I realized, that I do not only bother you in this thread.
Therefore I will withdraw from it.
It was not my intention to go into a discussion "What is good XHTML and what is useful for". The thread get that direction. I took part. I stop it now.
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