[css3-fonts] add note about line-height to font-size-adjust description

Author: John Daggett

css-fonts/Fonts.html

@@ -115,15 +115,15 @@
 
    <h1>CSS Fonts Module Level 3</h1>
 
-   <h2 class="no-num no-toc" id=editors-draft-26-august-2013>Editor's Draft
-    26 August 2013</h2>
+   <h2 class="no-num no-toc" id=editors-draft-28-august-2013>Editor's Draft
+    28 August 2013</h2>
 
    <dl id=authors>
     <dt>This version:
 
     <dd><a
      href="http://dev.w3.org/csswg/css-fonts/">http://dev.w3.org/csswg/css-fonts/</a>
-     <!-- <dd><a href="http://www.w3.org/TR/2013/ED-css-fonts-3-20130826/">http://www.w3.org/TR/2013/ED-css-fonts-3-20130826/</a>  -->
+     <!-- <dd><a href="http://www.w3.org/TR/2013/ED-css-fonts-3-20130828/">http://www.w3.org/TR/2013/ED-css-fonts-3-20130828/</a>  -->
 
 
     <dt>Latest version:
@@ -1746,6 +1746,22 @@ <h3 id=font-size-adjust-prop><span class=secno>3.6 </span>Relative sizing:
    <code>ex</code> and <code>ch</code> but does not affect the size of
    <code>em</code> units.
 
+  <p class=note>In CSS, authors typically specify <a
+   href="http://www.w3.org/TR/CSS2/visudet.html#propdef-line-height">‘<code
+   class=property>line-height</code>’</a> using <a
+   href="http://dev.w3.org/csswg/css-values/#em-unit">‘<code
+   class=property>em</code>’</a> units so that the <a
+   href="http://www.w3.org/TR/CSS2/visudet.html#propdef-line-height">‘<code
+   class=property>line-height</code>’</a> is linked to the font size. Since
+   the ‘<a href="#propdef-font-size-adjust"><code
+   class=property>font-size-adjust</code></a>’ property affects the font
+   size used but does not affect the size of font relative units, authors
+   should take care setting the line height when ‘<a
+   href="#propdef-font-size-adjust"><code
+   class=property>font-size-adjust</code></a>’ is used. Setting the line
+   height too tightly could result in overlapping lines of text in this
+   situation.
+
   <p>Authors can calculate the <a href="#aspect-value"><i>aspect
    value</i></a> for a given font by comparing spans with the same content
    but different font-size-adjust properties. If the same font-size is used,
@@ -6108,20 +6124,19 @@ <h3 class=no-num id=normative-references>Normative References</h3>
    <dt id=CSS3VAL>[CSS3VAL]
 
    <dd>Håkon Wium Lie; Tab Atkins; Elika J. Etemad. <a
-    href="http://www.w3.org/TR/2013/CR-css3-values-20130404/"><cite>CSS
-    Values and Units Module Level 3.</cite></a> 4 April 2013. W3C Candidate
+    href="http://www.w3.org/TR/2013/CR-css3-values-20130730/"><cite>CSS
+    Values and Units Module Level 3.</cite></a> 30 July 2013. W3C Candidate
     Recommendation. (Work in progress.) URL: <a
-    href="http://www.w3.org/TR/2013/CR-css3-values-20130404/">http://www.w3.org/TR/2013/CR-css3-values-20130404/</a>
+    href="http://www.w3.org/TR/2013/CR-css3-values-20130730/">http://www.w3.org/TR/2013/CR-css3-values-20130730/</a>
     </dd>
    <!---->
 
    <dt id=HTML5>[HTML5]
 
-   <dd>Ian Hickson. <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>Robin Berjon; et al. <a
+    href="http://www.w3.org/TR/2013/CR-html5-20130806/"><cite>HTML5.</cite></a>
+    6 August 2013. W3C Candidate Recommendation. (Work in progress.) URL: <a
+    href="http://www.w3.org/TR/2013/CR-html5-20130806/">http://www.w3.org/TR/2013/CR-html5-20130806/</a>
     </dd>
    <!---->