[css-ui-3] Add informative link to HTML about 'cursor' & image maps

Closes w3c#1618

Author: frivoal

css-ui/Overview.bs

@@ -933,6 +933,9 @@ in a future revision of CSS or HTML.
 
 User agents may ignore the cursor property over native user-agent controls such as scrollbars, resizers, or other native UI widgets e.g. those that may be used inside some user agent specific implementations of form elements.
 
+Note: [[HTML]] defines <a href="https://html.spec.whatwg.org/multipage/rendering.html#image-maps-2">special handling of image maps</a>
+for the 'cursor' property.
+
 Values have the following meanings:
 
 <dl dfn-type=value dfn-for=cursor>
@@ -1363,6 +1366,7 @@ This appendix describes changes from the
 	<li>Updated references to latest versions
 	<li>Editorial Clarification about the resize property
 	<li>Move directional focus navigation properties from level 3 to level 4
+	<l>Add informative link to HTML about special handling of 'cursor' over image maps
 </ul>
 
 <h2 class="no-num" id="security-privacy-considerations">Appendix C. Considerations for Security and Privacy</h2>

css-ui/issues-2017-2.html

@@ -39,6 +39,14 @@ <h1>CSS Basic User Interface Module Level 3 (CSS3 UI) Disposition of Comments fo
 Response: <a href='https://github.com/w3c/csswg-drafts/issues/1328#issuecomment-299635221'>https://github.com/w3c/csswg-drafts/issues/1328#issuecomment-299635221</a>
 Closed:   Accepted
 Resolved: Editorial</pre>
+<pre class='a' id='issue-2'>
+Issue 2. <a href='#issue-2'>#</a>
+Summary:  Add note pointing to HTML's definition of cursor applying to image maps
+From:     David Baron
+Comment:  <a href='https://github.com/w3c/csswg-drafts/issues/1618#issue-244204036'>https://github.com/w3c/csswg-drafts/issues/1618#issue-244204036</a>
+Response: <a href='https://github.com/w3c/csswg-drafts/issues/1618#issuecomment-316582905'>https://github.com/w3c/csswg-drafts/issues/1618#issuecomment-316582905</a>
+Closed:   Accepted
+Resolved: <a href='https://github.com/w3c/csswg-drafts/issues/1618#issuecomment-319927639'>https://github.com/w3c/csswg-drafts/issues/1618#issuecomment-319927639</a></pre>
 <script>
 (function () {
     var sheet = document.styleSheets[0];

css-ui/issues-2017-2.txt

@@ -9,3 +9,11 @@ Comment:  https://github.com/w3c/csswg-drafts/issues/1328#issue-226625704
 Response: https://github.com/w3c/csswg-drafts/issues/1328#issuecomment-299635221
 Closed:   Accepted
 Resolved: Editorial
+----
+Issue 2.
+Summary:  Add note pointing to HTML's definition of cursor applying to image maps
+From:     David Baron
+Comment:  https://github.com/w3c/csswg-drafts/issues/1618#issue-244204036
+Response: https://github.com/w3c/csswg-drafts/issues/1618#issuecomment-316582905
+Closed:   Accepted
+Resolved: https://github.com/w3c/csswg-drafts/issues/1618#issuecomment-319927639