<header>...</header>
<nav>...</nav>
<article>
<section> ... </section>
</article>
<aside>...</aside>  
<footer>...</footer>

<div id="header">header</div>
<div id="nav">nav</div>
<div class="article">
<div class="section">section</div>
</div>
<div id="aside">aside</div>
<div id="footer">footer</div>

<figure id="fig2">
<legend>Figure 2. Install Mozilla XForms dialog</legend>
<img alt="A Web site is requesting permission to install the ollowing item: Mozilla XForms 0.7 Unsigned" src="installdialog.jpg" />
</figure>

<div class="figure">
<h4 class="legend">Figure 2. Install Mozilla XForms dialog</h4>
<img alt="A Web site is requesting permission to install the ollowing item: Mozilla XForms 0.7 Unsigned" src="installdialog.jpg" />
</div>

The Great <m>Egret</m> (also known as the American <m>Egret</m>)is a large white wading bird found worldwide.The Great <m>Egret</m> flies with slow wing beats. The scientific name of the Great <m>Egret</m> isCasmerodius albus.XHTML的加上标记The Great <span class="m">Egret</span> (also known as the American <span class="m">Egret</span>)is a large white wading bird found worldwide.The Great <span class="m">Egret</span> flies with slow wing beats. The scientific name of the Great <span class="m">Egret</span> isCasmerodius albus.