[selectors] Update Overview table

--HG--
extra : rebase_source : 2217f0e768f61ed2b756931c8382aaf25a25bd4d

Author: fantasai

selectors/Overview.html

@@ -464,19 +464,19 @@ <h2 class="no-num no-toc" id=contents>Table of Contents</h2>
    <li><a href="#combinators"><span class=secno>13. </span> Combinators</a>
     <ul class=toc>
      <li><a href="#descendant-combinators"><span class=secno>13.1. </span>
-      Descendant combinator</a>
+      Descendant combinator (<code> </code>)</a>
 
      <li><a href="#child-combinators"><span class=secno>13.2. </span> Child
-      combinator</a>
+      combinator (<code>></code>)</a>
 
      <li><a href="#adjacent-sibling-combinators"><span class=secno>13.3.
-      </span> Next-sibling combinator</a>
+      </span> Next-sibling combinator (<code>+</code>)</a>
 
      <li><a href="#general-sibling-combinators"><span class=secno>13.4.
-      </span> Following-sibling combinator</a>
+      </span> Following-sibling combinator (<code>~</code>)</a>
 
      <li><a href="#idref-combinators"><span class=secno>13.5. </span>
-      Reference combinators</a>
+      Reference combinators <code>/ref/</code></a>
     </ul>
 
    <li><a href="#table-pseudos"><span class=secno>14. </span> Grid-Structural
@@ -903,6 +903,35 @@ <h2 id=overview><span class=secno>2. </span> Selectors Overview</h2>
 
      <td>2
 
+    <tr>
+     <td><code>E:active-drop</code>
+
+     <td>an E element that will receive the item currently being dragged
+
+     <td><a href="#drag-pseudos">The drag-and-drop pseudo-classes</a>
+
+     <td>4
+
+    <tr>
+     <td><code>E:valid-drop</code>
+
+     <td>an E element that could receive the item currently being dragged
+
+     <td><a href="#drag-pseudos">The drag-and-drop pseudo-classes</a>
+
+     <td>4
+
+    <tr>
+     <td><code>E:invalid-drop</code>
+
+     <td>an E element that cannot receive the item currently being dragged,
+      but could receive some other item
+
+     <td><a href="#drag-pseudos">The drag-and-drop pseudo-classes</a>
+
+     <td>4
+
+   <tbody>
     <tr>
      <td><code>E:enabled<br>
       E:disabled</code>
@@ -914,6 +943,35 @@ <h2 id=overview><span class=secno>2. </span> Selectors Overview</h2>
 
      <td>3
 
+    <tr>
+     <td><code>E:read-only</code><br>
+      <code>E:read-write</code>
+
+     <td>a user interface element E that
+
+     <td><a href="#rw-pseudos">The mutability pseudo-classes</a>
+
+     <td>3-UI/4
+
+    <tr>
+     <td><code>E:placeholder-shown</code>
+
+     <td>an input control currently showing placeholder text
+
+     <td><a href="#rw-pseudos">The placeholder-shown pseudo-class</a>
+
+     <td>3-UI/4
+
+    <tr>
+     <td><code>E:default</code>
+
+     <td>a user interface element E that
+
+     <td><a href="#default-pseudo">The default option pseudo-class
+      :default</a>
+
+     <td>3-UI/4
+
     <tr>
      <td><code>E:checked</code>
 
@@ -935,44 +993,44 @@ <h2 id=overview><span class=secno>2. </span> Selectors Overview</h2>
      <td>4
 
     <tr>
-     <td><code>E:default</code>
+     <td><code>E:valid</code><br>
+      <code>E:invalid</code>
 
-     <td>a user interface element E that
+     <td>a user-input element E that
 
-     <td><a href="#default-pseudo">The default option pseudo-class
-      :default</a>
+     <td><a href="#range-pseudos">The validity pseudo-classes</a>
 
      <td>3-UI/4
 
     <tr>
      <td><code>E:in-range</code><br>
       <code>E:out-of-range</code>
 
-     <td>a user interface element E that
+     <td>a user-input element E whose value is in-range/out-of-range
 
-     <td><a href="#range-pseudos">The validity pseudo-classes</a>
+     <td><a href="#range-pseudos">The range pseudo-classes</a>
 
      <td>3-UI/4
 
     <tr>
      <td><code>E:required</code><br>
       <code>E:optional</code>
 
-     <td>a user interface element E that
+     <td>a user-input element E that requires/does not require input
 
      <td><a href="#opt-pseudos">The optionality pseudo-classes</a>
 
      <td>3-UI/4
 
     <tr>
-     <td><code>E:read-only</code><br>
-      <code>E:read-write</code>
+     <td><code>E:required</code><br>
+      <code>E:optional</code>
 
-     <td>a user interface element E that
+     <td>a user-input element E with incorrect input
 
-     <td><a href="#rw-pseudos">The mutability pseudo-classes</a>
+     <td><a href="#opt-pseudos">The optionality pseudo-classes</a>
 
-     <td>3-UI/4
+     <td>4
 
    <tbody>
     <tr>
@@ -994,13 +1052,13 @@ <h2 id=overview><span class=secno>2. </span> Selectors Overview</h2>
      <td>3
 
     <tr>
-     <td><code>E:first-child</code>
+     <td><code>E:blank</code>
 
-     <td>an E element, first child of its parent
+     <td>an E element that has no content except maybe white space
 
      <td><a href="#structural-pseudos">Structural pseudo-classes</a>
 
-     <td>2
+     <td>4
 
     <tr>
      <td><code>E:nth-child(<var>n</var>)</code>
@@ -1012,19 +1070,28 @@ <h2 id=overview><span class=secno>2. </span> Selectors Overview</h2>
      <td>3
 
     <tr>
-     <td><code>E:last-child</code>
+     <td><code>E:nth-last-child(<var>n</var>)</code>
 
-     <td>an E element, last child of its parent
+     <td>an E element, the <var>n</var>-th child of its parent, counting from
+      the last one
 
      <td><a href="#structural-pseudos">Structural pseudo-classes</a>
 
      <td>3
 
     <tr>
-     <td><code>E:nth-last-child(<var>n</var>)</code>
+     <td><code>E:first-child</code>
 
-     <td>an E element, the <var>n</var>-th child of its parent, counting from
-      the last one
+     <td>an E element, first child of its parent
+
+     <td><a href="#structural-pseudos">Structural pseudo-classes</a>
+
+     <td>2
+
+    <tr>
+     <td><code>E:last-child</code>
+
+     <td>an E element, last child of its parent
 
      <td><a href="#structural-pseudos">Structural pseudo-classes</a>
 
@@ -1040,37 +1107,37 @@ <h2 id=overview><span class=secno>2. </span> Selectors Overview</h2>
      <td>3
 
     <tr>
-     <td><code>E:first-of-type</code>
+     <td><code>E:nth-of-type(<var>n</var>)</code>
 
-     <td>an E element, first sibling of its type
+     <td>an E element, the <var>n</var>-th sibling of its type
 
      <td><a href="#structural-pseudos">Structural pseudo-classes</a>
 
      <td>3
 
     <tr>
-     <td><code>E:nth-of-type(<var>n</var>)</code>
+     <td><code>E:nth-last-of-type(<var>n</var>)</code>
 
-     <td>an E element, the <var>n</var>-th sibling of its type
+     <td>an E element, the <var>n</var>-th sibling of its type, counting from
+      the last one
 
      <td><a href="#structural-pseudos">Structural pseudo-classes</a>
 
      <td>3
 
     <tr>
-     <td><code>E:last-of-type</code>
+     <td><code>E:first-of-type</code>
 
-     <td>an E element, last sibling of its type
+     <td>an E element, first sibling of its type
 
      <td><a href="#structural-pseudos">Structural pseudo-classes</a>
 
      <td>3
 
     <tr>
-     <td><code>E:nth-last-of-type(<var>n</var>)</code>
+     <td><code>E:last-of-type</code>
 
-     <td>an E element, the <var>n</var>-th sibling of its type, counting from
-      the last one
+     <td>an E element, last sibling of its type
 
      <td><a href="#structural-pseudos">Structural pseudo-classes</a>
 
@@ -1107,38 +1174,6 @@ <h2 id=overview><span class=secno>2. </span> Selectors Overview</h2>
 
      <td>4
 
-   <tbody>
-    <tr>
-     <td><code>E:column(<a href="#selector"><var>selector</var></a>)</code>
-
-     <td>an E element that represents a cell in a grid/table belonging to a
-      column represented by an element that matches <a
-      href="#selector"><var>selector</var></a>
-
-     <td><a href="#table-pseudos">Grid-Structural pseudo-classes</a>
-
-     <td>4
-
-    <tr>
-     <td><code>E:nth-column(<var>n</var>)</code>
-
-     <td>an E element that represents a cell belonging to the <var>n</var>th
-      column in a grid/table
-
-     <td><a href="#table-pseudos">Grid-Structural pseudo-classes</a>
-
-     <td>4
-
-    <tr>
-     <td><code>E:nth-last-column(<var>n</var>)</code>
-
-     <td>an E element that represents a cell belonging to the <var>n</var>th
-      column in a grid/table, counting from the last one
-
-     <td><a href="#table-pseudos">Grid-Structural pseudo-classes</a>
-
-     <td>4
-
    <tbody>
     <tr>
      <td><code>E F</code>
@@ -1196,6 +1231,37 @@ <h2 id=overview><span class=secno>2. </span> Selectors Overview</h2>
       href="#child-combinators">Child combinator</a>
 
      <td>4
+
+   <tbody>
+    <tr>
+     <td><code>F || E</code>
+
+     <td>an E element that represents a cell in a grid/table belonging to a
+      column represented by an element F
+
+     <td><a href="#table-pseudos">Grid-Structural pseudo-classes</a>
+
+     <td>4
+
+    <tr>
+     <td><code>E:nth-column(<var>n</var>)</code>
+
+     <td>an E element that represents a cell belonging to the <var>n</var>th
+      column in a grid/table
+
+     <td><a href="#table-pseudos">Grid-Structural pseudo-classes</a>
+
+     <td>4
+
+    <tr>
+     <td><code>E:nth-last-column(<var>n</var>)</code>
+
+     <td>an E element that represents a cell belonging to the <var>n</var>th
+      column in a grid/table, counting from the last one
+
+     <td><a href="#table-pseudos">Grid-Structural pseudo-classes</a>
+
+     <td>4
   </table>
 
   <p class=note>Some Level 4 selectors (noted above as "3-UI") were
@@ -3827,7 +3893,7 @@ <h4 id=the-nth-last-match-pseudo><span class=secno>12.7.2. </span> <a
   <h2 id=combinators><span class=secno>13. </span> Combinators</h2>
 
   <h3 id=descendant-combinators><span class=secno>13.1. </span> Descendant
-   combinator</h3>
+   combinator (<code> </code>)</h3>
 
   <p>At times, authors may want selectors to describe an element that is the
    descendant of another element in the document tree (e.g., "an
@@ -3875,7 +3941,8 @@ <h3 id=descendant-combinators><span class=secno>13.1. </span> Descendant
    <pre>div p *[href]</pre>
   </div>
 
-  <h3 id=child-combinators><span class=secno>13.2. </span> Child combinator</h3>
+  <h3 id=child-combinators><span class=secno>13.2. </span> Child combinator
+   (<code>></code>)</h3>
 
   <p>A <dfn id=child-combinator>child combinator</dfn> describes a childhood
    relationship between two elements. A child combinator is made of the
@@ -3907,7 +3974,7 @@ <h3 id=child-combinators><span class=secno>13.2. </span> Child combinator</h3>
    href="#structural-pseudos">:first-child</a></code> pseudo-class above.
 
   <h3 id=adjacent-sibling-combinators><span class=secno>13.3. </span>
-   Next-sibling combinator</h3>
+   Next-sibling combinator (<code>+</code>)</h3>
 
   <p>The <dfn id=next-sibling-combinator>next-sibling combinator</dfn> is
    made of the &quot;plus sign&quot; (U+002B, <code>+</code>) character that
@@ -3936,7 +4003,7 @@ <h3 id=adjacent-sibling-combinators><span class=secno>13.3. </span>
   </div>
 
   <h3 id=general-sibling-combinators><span class=secno>13.4. </span>
-   Following-sibling combinator</h3>
+   Following-sibling combinator (<code>~</code>)</h3>
 
   <p>The <dfn id=following-sibling-combinator>following-sibling
    combinator</dfn> is made of the &quot;tilde&quot; (U+007E, <code>~</code>)
@@ -3962,7 +4029,7 @@ <h3 id=general-sibling-combinators><span class=secno>13.4. </span>
   </div>
 
   <h3 id=idref-combinators><span class=secno>13.5. </span> Reference
-   combinators</h3>
+   combinators <code>/ref/</code></h3>
 
   <p> The <dfn id=reference-combinator>reference combinator</dfn> consists of
    two slashes with an intervening <a