1  Filter.ExtractStyleBlocks.Scope
 2  TYPE: string/null
 3  VERSION: 3.0.0
 4  DEFAULT: NULL
 5  ALIASES: 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