<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\"\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">
<html xmlns=\"http://www.w3.org/1999/xhtml\" lang=\"nl\">
<head>
<title>titel van het document</title>
<meta name=\"description\" content=\"Free Web tutorials\" />
<meta name=\"keywords\" content=\"HTML,CSS,XML,JavaScript\" />
<meta name=\"author\" content=\"Hege Refsnes\" />
<meta http-equiv=\"Content-Type\" content=\"text/html;charset=ISO-8859-1\" />
<base href=http://www.mindmeister.com />
<base target=\"_blank\" />
<link rel=\"stylesheet\" type=\"text/css\" href=\"css.css\" />

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HTML en XHTML