[selectors4] Add clarifying note that the host language defines what pseudo-elements exist.

Author: tabatkins

selectors4/Overview.html

@@ -9,10 +9,10 @@
    rel=dcterms.rights>
   <meta content="Selectors Level 4" name=dcterms.title>
   <meta content=text name=dcterms.type>
-  <meta content=2013-01-16 name=dcterms.issued>
+  <meta content=2013-02-01 name=dcterms.issued>
   <meta content="http://dev.w3.org/csswg/selectors4/" name=dcterms.creator>
   <meta content=W3C name=dcterms.publisher>
-  <meta content="http://www.w3.org/TR/2013/ED-selectors4-20130116/"
+  <meta content="http://www.w3.org/TR/2013/ED-selectors4-20130201/"
    name=dcterms.identifier>
   <link href="../default.css" rel=stylesheet type="text/css">
   <style type="text/css">
@@ -29,14 +29,14 @@
 
    <h1 id=title>Selectors Level 4</h1>
 
-   <h2 class="no-num no-toc" id=longstatus-date>Editor's Draft 16 January
+   <h2 class="no-num no-toc" id=longstatus-date>Editor's Draft 1 February
     2013</h2>
 
    <dl>
     <dt>This version:
 
-    <dd><a href="http://www.w3.org/TR/2013/ED-selectors4-20130116/">
-     http://www.w3.org/TR/2013/ED-selectors4-20130116/</a>
+    <dd><a href="http://www.w3.org/TR/2013/ED-selectors4-20130201/">
+     http://www.w3.org/TR/2013/ED-selectors4-20130201/</a>
 
     <dt>Editor's draft:
 
@@ -87,7 +87,8 @@ <h2 class="no-num no-toc" id=longstatus-date>Editor's Draft 16 January
     title="Massachusetts Institute of Technology">MIT</abbr></a>, <a
     href="http://www.ercim.eu/"><abbr
     title="European Research Consortium for Informatics and Mathematics">ERCIM</abbr></a>,
-    <a href="http://www.keio.ac.jp/">Keio</a>), All Rights Reserved. W3C <a
+    <a href="http://www.keio.ac.jp/">Keio</a>, <a
+    href="http://ev.buaa.edu.cn/">Beihang</a>), All Rights Reserved. W3C <a
     href="http://www.w3.org/Consortium/Legal/ipr-notice#Legal_Disclaimer">liability</a>,
     <a
     href="http://www.w3.org/Consortium/Legal/ipr-notice#W3C_Trademarks">trademark</a>
@@ -1318,65 +1319,68 @@ <h3 id=pseudo-classes><span class=secno>3.4. </span> Pseudo-classes</h3>
 
   <h3 id=pseudo-elements><span class=secno>3.5. </span>Pseudo-elements</h3>
 
-  <p><dfn id=pseudo-elements0>Pseudo-elements</dfn> create abstractions about
-   the document tree beyond those specified by the document language. For
-   instance, document languages do not offer mechanisms to access the first
-   letter or first line of an element's content. <a
-   href="#pseudo-elements0"><i>Pseudo-elements</i></a> allow authors to refer
-   to this otherwise inaccessible information. <a
-   href="#pseudo-elements0"><i>Pseudo-elements</i></a> may also provide
-   authors a way to refer to content that does not exist in the source
-   document (e.g., the <code>::before</code> and <code>::after</code> <a
-   href="#pseudo-elements0"><i>pseudo-elements</i></a> give access to
-   generated content in CSS <a href="#CSS21"
+  <p><dfn id=pseudo-element title=pseudo-element>Pseudo-elements</dfn> create
+   abstractions about the document tree beyond those specified by the
+   document language. For instance, document languages do not offer
+   mechanisms to access the first letter or first line of an element's
+   content. <a href="#pseudo-element"><i>Pseudo-elements</i></a> allow
+   authors to refer to this otherwise inaccessible information. <a
+   href="#pseudo-element"><i>Pseudo-elements</i></a> may also provide authors
+   a way to refer to content that does not exist in the source document
+   (e.g., the <code>::before</code> and <code>::after</code> <a
+   href="#pseudo-element"><i>pseudo-elements</i></a> give access to generated
+   content in CSS <a href="#CSS21"
    rel=biblioentry>[CSS21]<!--{{CSS21}}--></a>).
 
-  <p>A <i>pseudo-element</i> is made of two colons (<code>::</code>) followed
-   by the name of the <i>pseudo-element</i>.
+  <p>A <a href="#pseudo-element"><i>pseudo-element</i></a> is made of two
+   colons (<code>::</code>) followed by the name of the <a
+   href="#pseudo-element"><i>pseudo-element</i></a>.
 
   <p>This <code>::</code> notation was chosen in order to establish a
    discrimination between <a href="#pseudo-class"><i>pseudo-classes</i></a>
    (which subclass existing elements) and <a
-   href="#pseudo-elements0"><i>pseudo-elements</i></a> (which are elements
-   not represented in the document tree). However, for compatibility with
+   href="#pseudo-element"><i>pseudo-elements</i></a> (which are elements not
+   represented in the document tree). However, for compatibility with
    existing style sheets, user agents must also accept the previous one-colon
-   notation for <a href="#pseudo-elements0"><i>pseudo-elements</i></a>
+   notation for <a href="#pseudo-element"><i>pseudo-elements</i></a>
    introduced in CSS levels 1 and 2 (namely, <code>:first-line</code>,
    <code>:first-letter</code>, <code>:before</code> and <code>:after</code>).
    This compatibility notation is not allowed any other <a
-   href="#pseudo-elements0"><i>pseudo-elements</i></a>.
+   href="#pseudo-element"><i>pseudo-elements</i></a>.
 
   <p class=note>A future version of this specification may allow multiple
    pseudo-elements per selector.
 
-  <p>Syntactically, a <i>pseudo-element</i> immediately follows the <a
-   href="#compound"><i>compound selector</i></a> representing its <dfn
-   id=originating-element>originating element</dfn>, i.e. the element to
-   which it is associated. Unless otherwise overridden by the definition of
-   the <i>pseudo-element</i>:
+  <p>Syntactically, a <a href="#pseudo-element"><i>pseudo-element</i></a>
+   immediately follows the <a href="#compound"><i>compound selector</i></a>
+   representing its <dfn id=originating-element>originating element</dfn>,
+   i.e. the element to which it is associated. Unless otherwise overridden by
+   the definition of the <a href="#pseudo-element"><i>pseudo-element</i></a>:
 
   <ul>
-   <li>only one <i>pseudo-element</i> may appear per <a
-    href="#complex"><i>complex selector</i></a>
+   <li>only one <a href="#pseudo-element"><i>pseudo-element</i></a> may
+    appear per <a href="#complex"><i>complex selector</i></a>
 
-   <li>the <i>pseudo-element</i> must appear after the <a
-    href="#compound"><i>compound selector</i></a> that represents the <a
-    href="#subject">subjects</a> of the selector
+   <li>the <a href="#pseudo-element"><i>pseudo-element</i></a> must appear
+    after the <a href="#compound"><i>compound selector</i></a> that
+    represents the <a href="#subject">subjects</a> of the selector
 
-   <li>the <i>pseudo-element</i> may appear only if the subject of the
-    selector is the last <a href="#compound"><i>compound selector</i></a> in
-    the selector.
+   <li>the <a href="#pseudo-element"><i>pseudo-element</i></a> may appear
+    only if the subject of the selector is the last <a
+    href="#compound"><i>compound selector</i></a> in the selector.
   </ul>
 
-  <p>A <i>pseudo-element</i> may be immediately followed by any combination
-   of the <a href="#useraction-pseudos">user action pseudo-classes</a>, in
-   which case the <i>pseudo-element</i> is represented only when it is in the
-   corresponding state. Whether these pseudo-classes can match on the
-   <i>pseudo-element</i> depends on the <a
-   href="#pseudo-class"><i>pseudo-class</i></a> and <i>pseudo-element</i>”s
-   definitions: unless otherwise-specified, none of these <a
-   href="#pseudo-class"><i>pseudo-classes</i></a> will match on the
-   <i>pseudo-element</i>.
+  <p>A <a href="#pseudo-element"><i>pseudo-element</i></a> may be immediately
+   followed by any combination of the <a href="#useraction-pseudos">user
+   action pseudo-classes</a>, in which case the <a
+   href="#pseudo-element"><i>pseudo-element</i></a> is represented only when
+   it is in the corresponding state. Whether these pseudo-classes can match
+   on the <a href="#pseudo-element"><i>pseudo-element</i></a> depends on the
+   <a href="#pseudo-class"><i>pseudo-class</i></a> and <a
+   href="#pseudo-element"><i>pseudo-element</i></a>”s definitions: unless
+   otherwise-specified, none of these <a
+   href="#pseudo-class"><i>pseudo-classes</i></a> will match on the <a
+   href="#pseudo-element"><i>pseudo-element</i></a>.
 
   <div class=example>
    <p>For example, the <a href="#hover-pseudo"><code>:hover</code></a>
@@ -1390,6 +1394,11 @@ <h3 id=pseudo-elements><span class=secno>3.5. </span>Pseudo-elements</h3>
     will never match anything.
   </div>
 
+  <p>The host language defines which pseudo-elements exist and their meaning.
+   For CSS, <a href="#CSS21" rel=biblioentry>[CSS21]<!--{{CSS21}}--></a>
+   defines the ::before, ::after, ::first-line and ::first-letter
+   pseudo-elements.
+
   <h3 id=case-sensitive><span class=secno>3.6. </span> Characters and case
    sensitivity</h3>
 
@@ -1725,8 +1734,9 @@ <h3 id=universal-selector><span class=secno>5.2. </span> Universal selector</h3>
   <p>If a universal selector represented by <code>*</code> (i.e. without a
    namespace prefix) is not the only component of a <a
    href="#compound"><i>compound selector</i></a> or is immediately followed
-   by a <i>pseudo-element</i>, then the <code>*</code> may be omitted and the
-   universal selector's presence implied.
+   by a <a href="#pseudo-element"><i>pseudo-element</i></a>, then the
+   <code>*</code> may be omitted and the universal selector's presence
+   implied.
 
   <div class=example>
    <p>Examples:
@@ -4418,9 +4428,10 @@ <h3 id=informative-references><span class=secno>20.2. </span> Informative
    <dt id=HTML5>[HTML5]
 
    <dd>Ian Hickson. <a
-    href="http://www.w3.org/TR/2011/WD-html5-20110525/"><cite>HTML5.</cite></a>
-    25 May 2011. W3C Working Draft. (Work in progress.) URL: <a
-    href="http://www.w3.org/TR/2011/WD-html5-20110525/">http://www.w3.org/TR/2011/WD-html5-20110525/</a>
+    href="http://www.w3.org/TR/2012/CR-html5-20121217/"><cite>HTML5.</cite></a>
+    17 December 2012. W3C Candidate Recommendation. (Work in progress.) URL:
+    <a
+    href="http://www.w3.org/TR/2012/CR-html5-20121217/">http://www.w3.org/TR/2012/CR-html5-20121217/</a>
    </dd>
    <!---->
 

selectors4/Overview.src.html

@@ -673,7 +673,7 @@ <h3 id="pseudo-classes">
 
 <h3 id="pseudo-elements">Pseudo-elements</h3>
 
-  <p><dfn>Pseudo-elements</dfn> create abstractions about the document tree
+  <p><dfn id='pseudo-element' title="pseudo-element">Pseudo-elements</dfn> create abstractions about the document tree
   beyond those specified by the document language.
   For instance, document languages do not offer mechanisms to access
   the first letter or first line of an element's content.
@@ -729,6 +729,9 @@ <h3 id="pseudo-elements">Pseudo-elements</h3>
     the selector <code>::first-line:focus</code> will never match anything.
   </div>
 
+  <p>The host language defines which pseudo-elements exist and their meaning. 
+  For CSS, [[CSS21]] defines the ::before, ::after, ::first-line and ::first-letter pseudo-elements.
+
 <h3 id="case-sensitive">
 Characters and case sensitivity</h3>