1Filter.ExtractStyleBlocks.Scope
2TYPE: string/null
3VERSION: 3.0.0
4DEFAULT: NULL
5ALIASES: Filter.ExtractStyleBlocksScope, FilterParam.ExtractStyleBlocksScope
6--DESCRIPTION--
7
8<p>
9  If you would like users to be able to define external stylesheets, but
10  only allow them to specify CSS declarations for a specific node and
11  prevent them from fiddling with other elements, use this directive.
12  It accepts any valid CSS selector, and will prepend this to any
13  CSS declaration extracted from the document. For example, if this
14  directive is set to <code>#user-content</code> and a user uses the
15  selector <code>a:hover</code>, the final selector will be
16  <code>#user-content a:hover</code>.
17</p>
18<p>
19  The comma shorthand may be used; consider the above example, with
20  <code>#user-content, #user-content2</code>, the final selector will
21  be <code>#user-content a:hover, #user-content2 a:hover</code>.
22</p>
23<p>
24  <strong>Warning:</strong> It is possible for users to bypass this measure
25  using a naughty + selector. This is a bug in CSS Tidy 1.3, not HTML
26  Purifier, and I am working to get it fixed. Until then, HTML Purifier
27  performs a basic check to prevent this.
28</p>
29--# vim: et sw=4 sts=4
30