'filter' is applied to
+----------------+--------------------------------------------------------------+ | Applied_To |<a> <acronym> | | |<address> <b> | | |<bdo> <big> | | |<blockquote> <body> | | |<button> <caption> | | |<center> <cite> | | |<code> <custom> | | |<dd> <del> | | |<dfn> <dir> | | |<div> <dl> | | |<dt> <em> | | |<fieldset> <font> | | |<form> <frame> | | |<frameset> <hn> | | |<i> <iframe> | | |<img> <input type="button"> | | |<input type="checkbox"> <inputtype="file"> | | |<input type="image"> <input type="password"> | | |<input type="radio"> <input type="reset"> | | |<input type="submit"> <input type="text"> | | |<ins> <kbd> | | |<label> <legend> | | |<li> <marquee> | | |<menu> <nobr> | | |<ol> <p> | | |<pre> <q> | | |<rt> <ruby> | | |<s> <samp> | | |<small> <span> | | |<strike> <strong> | | |<sub> <sup> | | |<table> <td> | | |<textarea> <th> | | |<tt> <u> | | |<ul> <var> | | |<xmp> | +----------------+--------------------------------------------------------------+