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<head>
	<meta charset="utf-8">
	<title>Data Filtering &mdash; CKEditor Sample</title>
	<script src="../ckeditor.js"></script>
	<link rel="stylesheet" href="sample.css">
	<script>
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		CKEDITOR.config.removeDialogTabs = 'image:advanced;link:advanced;flash:advanced;creatediv:advanced;editdiv:advanced';
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</head>
<body>
	<h1 class="samples">
		<a href="index.html">CKEditor Samples</a> &raquo; Data Filtering and Features Activation
	</h1>
	<div class="description">
		<p>
			This sample page demonstrates the idea of Advanced Content Filter
			(<abbr title="Advanced Content Filter">ACF</abbr>), a sophisticated
			tool that takes control over what kind of data is accepted by the editor and what
			kind of output is produced.
		</p>
		<h2>When and what is being filtered?</h2>
		<p>
			<abbr title="Advanced Content Filter">ACF</abbr> controls
			<strong>every single source of data</strong> that comes to the editor.
			It process both HTML that is inserted manually (i.e. pasted by the user)
			and programmatically like:
		</p>
<pre class="samples">
editor.setData( '&lt;p&gt;Hello world!&lt;/p&gt;' );
</pre>
		<p>
			<abbr title="Advanced Content Filter">ACF</abbr> discards invalid,
			useless HTML tags and attributes so the editor remains "clean" during
			runtime. <abbr title="Advanced Content Filter">ACF</abbr> behaviour
			can be configured and adjusted for a particular case to prevent the
			output HTML (i.e. in CMS systems) from being polluted.

			This kind of filtering is a first, client-side line of defense
			against "<a href="http://en.wikipedia.org/wiki/Tag_soup">tag soups</a>",
			the tool that precisely restricts which tags, attributes and styles
			are allowed (desired). When properly configured, <abbr title="Advanced Content Filter">ACF</abbr>
			is an easy and fast way to produce a high-quality, intentionally filtered HTML.
		</p>

		<h3>How to configure or disable ACF?</h3>
		<p>
			Advanced Content Filter is enabled by default, working in "automatic mode", yet
			it provides a set of easy rules that allow adjusting filtering rules
			and disabling the entire feature when necessary. The config property
			responsible for this feature is <code><a class="samples"
			href="http://docs.ckeditor.com/#!/api/CKEDITOR.config-cfg-allowedContent">config.allowedContent</a></code>.
		</p>
		<p>