[1]
[CITE[Cross-document messaging in Opera - Arve Bersvendsen]] <http://virtuelvis.com/archives/2005/12/cross-document-messaging>

[2]
[[Web Applications 1.0]] の、他の[[ドメイン]]の[[文書]]に[[メッセージ]]を送る機能。

[[Opera 8]] β にはありませんでしたが、 [[Opera 8.5]]
では実装されていました。

[3]
[CITE[The cross-document messaging APIs]] ([[Ian Hickson <ian@...>]] 著, [CODE[2007-08-09 00:51:36 +09:00]] 版) <http://permalink.gmane.org/gmane.org.w3c.whatwg.discuss/11634>

[4]
[CITE[Index of /specs/dom/messages]] ([CODE[2008-02-13 01:58:34 +09:00]] 版) <http://www.hixie.ch/specs/dom/messages/>

[23]
[CITE[Fixed a security problem with postMessage()]] ([[Ian Hickson <ian@...>]] 著, [CODE[2008-02-12 20:03:46 +09:00]] 版) <http://permalink.gmane.org/gmane.org.w3c.whatwg.discuss/13237>
([[名無しさん]])

[24]
[CITE[IE Team Feedback on HTML 5.0 Cross Document Messaging]] ([[Sunava Dutta <sunavad@...>]] 著, [CODE[2008-02-22 03:18:40 +09:00]] 版) <http://permalink.gmane.org/gmane.org.w3c.whatwg.discuss/13320>

[32]
[CITE[postMessage() issues]] ([[Ian Hickson <ian@...>]] 著, [CODE[2008-04-16 00:10:07 +09:00]] 版) <http://permalink.gmane.org/gmane.org.w3c.whatwg.discuss/13716>

[38]
[CITE[postMessage feedback]] ([[Ian Hickson <ian@...>]] 著, [CODE[2008-04-24 23:49:56 +09:00]] 版) <http://permalink.gmane.org/gmane.org.w3c.whatwg.discuss/13867>

[39] [CITE@en[(X)HTML5 Tracking]]
([TIME[2010-01-09 14:12:17 +09:00]] 版)
<http://html5.org/tools/web-apps-tracker?from=4547&to=4548>

[40] [CITE@en-US-x-Hixie[HTML5 Communications]]
([TIME[2010-01-09 10:10:53 +09:00]] 版)
<http://dev.w3.org/html5/postmsg/Overview.html>

[41] [CITE[IRC logs: freenode / #whatwg / 20100212]]
([TIME[2010-02-14 11:17:32 +09:00]] 版)
<http://krijnhoetmer.nl/irc-logs/whatwg/20100212#l-271>

[42] [CITE@en-US[David Baron's weblog: setTimeout with a shorter delay]]
([TIME[2010-03-16 08:44:54 +09:00]] 版)
<http://dbaron.org/log/20100309-faster-timeouts>

[43] [CITE['''['''whatwg''']''' postMessage's target origin argument can be a full URL in some implementations]]
([TIME[2010-08-11 10:18:42 +09:00]] 版)
<http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2010-August/027848.html>