'a[!href];' +
		'img(left,right)[!src,alt,width,height];' +
		'table tr th td caption;' +
		'span{!font-family};' +'
		'span{!color};' +
		'span(!marker);' +
		'del ins'
} );
</pre>
			<p>
				The following rules may require additional explanation:
			</p>
			<ul>
				<li>
					<code>h1 h2 h3 p blockquote strong em</code> - These tags
					are accepted by the editor. Any tag attributes will be discarded.
				</li>
				<li>
					<code>a[!href]</code> - <code>href</code> attribute is obligat