hixie: Add a comment about how the + is ignored. (whatwg r4296)

hixie: Add a comment about how the + is ignored. (whatwg r4296)

http://dev.w3.org/cvsweb/html5/spec/Overview.html?r1=1.3431&r2=1.3432&f=h
http://html5.org/tools/web-apps-tracker?from=4295&to=4296

===================================================================
RCS file: /sources/public/html5/spec/Overview.html,v
retrieving revision 1.3431
retrieving revision 1.3432
diff -u -d -r1.3431 -r1.3432
--- Overview.html	23 Oct 2009 06:17:43 -0000	1.3431
+++ Overview.html	23 Oct 2009 06:19:11 -0000	1.3432
@@ -2308,7 +2308,9 @@
    <li><p>If <var title="">position</var> is past the end of <var title="">input</var>, return an error.</li>
 
    <li><p>If the next character is a U+002B PLUS SIGN character (+),
-   advance <var title="">position</var> to the next character.</li>
+   advance <var title="">position</var> to the next character.  (The
+   "<code title="">+</code>" is ignored, but it is not
+   conforming.)</li>
 
    <li><p>If <var title="">position</var> is past the end of <var title="">input</var>, return an error.</li>