* 歴史

** 選択子3

[REFS[
- [3] [CITE[User Interface Enhancements]] ([TIME[1999-09-16 05:07:02 +09:00]] 版) <http://www.w3.org/TR/1999/WD-css3-userint-19990916#pseudo-selection>
- [2] [CITE@en[User Interface for CSS3]] ([TIME[2000-06-23 03:09:21 +09:00]] 版) <http://www.w3.org/TR/2000/WD-css3-userint-20000216#pseudo-selection>
- [6] [CITE@en[CSS3 module: W3C Selectors]] ([TIME[2000-04-11 01:57:05 +09:00]] 版) <http://www.w3.org/TR/2000/WD-css3-selectors-20000410#selection>
- [7] [CITE@en[CSS3 module: W3C Selectors]] ([TIME[2000-10-06 02:05:50 +09:00]] 版) <http://www.w3.org/TR/2000/WD-css3-selectors-20001005/#selection>
- [8] [CITE@en[CSS3 module: W3C Selectors]] ([TIME[2001-01-29 23:57:00 +09:00]] 版) <http://www.w3.org/TR/2001/WD-css3-selectors-20010126/#selection>
- [9] [CITE@en[Selectors]] ([TIME[2001-11-15 23:36:43 +09:00]] 版) <http://www.w3.org/TR/2001/CR-css3-selectors-20011113/#selection>
- [12] [CITE@en[Selectors]] ([TIME[2005-12-15 00:49:29 +09:00]] 版) <http://www.w3.org/TR/2005/WD-css3-selectors-20051215/#selection>
]REFS]

[4] はじめ [CODE(CSS)@en[[[:selection]]]] [[擬似要素]]は [[css-userint]] [[WD]] で定義されており、
途中で[[選択子3]]に移動しました。[[擬似要素]]の構文の変更で、途中から [CODE(CSS)@en[[[::selection]]]]
に変わっています。

** [CODE(CSS)@en[::-moz-selection]]

@@ 

** 選択子3からの削除

[REFS[
- [13] [CITE@en[Selectors Level 3]] ([TIME[2009-03-10 22:17:53 +09:00]] 版) <http://www.w3.org/TR/2009/WD-css3-selectors-20090310/#selection>
- [15] [CITE@en[Selectors Level 3]] ([TIME[2009-12-15 08:41:18 +09:00]] 版) <http://www.w3.org/TR/2009/PR-css3-selectors-20091215/#selection>
- [16] [CITE@en[Selectors Level 3]] ([TIME[2011-09-29 22:16:17 +09:00]] 版) <http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#selection>
- [1] [CITE@en[Selectors Level 3]] ([TIME[2011-09-29 22:16:17 +09:00]] 版) <http://www.w3.org/TR/selectors/#selection>
]REFS]

[14] >>12 の次の [[WD]] である >>13 で、実装経験の不足から削除されています。

[17] [CITE@en[CSS Basic User Interface Module Level 3 (CSS3 UI)]]
( ([[Tantek Çelik]] 著, [TIME[2012-01-13 20:03:30 +09:00]] 版))
<http://www.w3.org/TR/2012/WD-css3-ui-20120117/#changes-list>

[18] [CITE@en[selection object (Internet Explorer)]]
( ([TIME[2014-01-16 03:18:53 +09:00]] 版))
<http://msdn.microsoft.com/en-us/library/ie/ms535869(v=vs.85).aspx>

[19] [CITE@en[''''''[''''''css3-selectors'''''']'''''''''['''css3-ui''']''' Status of the ::selection pseudo-element]]
( ([[Daniel Tan]] 著, [TIME[2012-01-12 05:41:01 +09:00]] 版))
<http://lists.w3.org/Archives/Public/www-style/2012Jan/0514.html>