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<b>HTML Tags</b><br /><br />
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<h1>HTML <html> tag</h1>
<hr />
<h2>Definition and Usage</h2>
<p>This element tells a browser that this is an HTML document.</p>
<hr />
<h2>Differences Between HTML and XHTML</h2>
<p>The xmlns attribute is required in XHTML but not in HTML. However, the
validator on w3.org does not complain when this attribute is missing from the
<html> tag in an XHTML document. This is because "xmlns=http://www.w3.org/1999/xhtml"
is a fixed value and will be added to the <html> tag even if you do not include
it.</p>
<hr />
<h2>Example</h2>
<table class="ex" cellspacing="0" border="1" width="100%" cellpadding="3">
<tr>
<td valign="top">
<html xmlns="http://www.w3.org/1999/xhtml">
<p><head><br />
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