html and xhtml are "standards" just like the centimeter or inch, you can
"measure" anything using them!
still, complying standards is more like FOSS way of life, you should -in
most cases- find the validation page of (x)html and\or CSS in all FOSS
activists websites, it helps making the web better..

-------------------------
Ahmed Faissl 
twitter: @faissl
website: www.aldarweesh.org

 Goes without saying..

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