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Valid XHTML 1.0 Transitional

HTAi has taken the care to create a website using interoperable Web pages. This website was successfully checked as XHTML 1.0 Transitional. This means that the resource in question identified itself as "XHTML 1.0 Transitional" and that W3C successfully performed a formal validation using an SGML, HTML5 and/or XML Parser(s).