Editorial: stop enumerating ShadowRoot alongside DocumentFragment

We don’t mention other concrete subclasses either, such as
HTMLBodyElement. So the new policy is to list concrete classes
(DocumentFragment) unless they’re a subclass of a concrete class
(ShadowRoot) and not list abstract classes (CharacterData).

Fixes #190.

dom.bs

@@ -1488,7 +1488,7 @@ can be used to explore this matter in more detail.
 
 <h3 id=node-trees>Node tree</h3>
 
-<p>{{Document}}, {{DocumentType}}, {{DocumentFragment}}, {{ShadowRoot}}, {{Element}}, {{Text}},
+<p>{{Document}}, {{DocumentType}}, {{DocumentFragment}}, {{Element}}, {{Text}},
 {{ProcessingInstruction}}, and {{Comment}} objects (simply called
 <dfn export id=concept-node>nodes</dfn>) <a>participate</a> in a <a>tree</a>, simply named the
 <dfn export id=concept-node-tree>node tree</dfn>.
@@ -1508,7 +1508,6 @@ can be used to explore this matter in more detail.
    <li><p>Zero or more nodes each of which is {{ProcessingInstruction}} or {{Comment}}.
   </ol>
  <dt>{{DocumentFragment}}
- <dt>{{ShadowRoot}}
  <dt>{{Element}}
  <dd><p>Zero or more nodes each of which is {{Element}}, {{Text}}, {{ProcessingInstruction}}, or
  {{Comment}}.
@@ -3460,8 +3459,8 @@ dictionary GetRootNodeOptions {
 </pre>
 
 <p class="note no-backref">{{Node}} is an abstract interface and does not exist as <a>node</a>. It
-is used by all <a>nodes</a> ({{Document}}, {{DocumentType}}, {{DocumentFragment}}, {{ShadowRoot}},
-{{Element}}, {{Text}}, {{ProcessingInstruction}}, and {{Comment}}).
+is used by all <a>nodes</a> ({{Document}}, {{DocumentType}}, {{DocumentFragment}}, {{Element}},
+{{Text}}, {{ProcessingInstruction}}, and {{Comment}}).
 
 Each <a>node</a> has an associated
 <dfn export for=Node id=concept-node-document>node document</dfn>, set upon creation,
@@ -3507,7 +3506,7 @@ that is a <a>document</a>.
    <a>doctype</a>.
 
    <dt><code>{{Node}} . {{Node/DOCUMENT_FRAGMENT_NODE}}</code> (11)
-   <dd><var>node</var> is a {{DocumentFragment}} or {{ShadowRoot}} <a>node</a>.
+   <dd><var>node</var> is a {{DocumentFragment}} <a>node</a>.
   </dl>
 
  <dt><code><var>node</var> . {{Node/nodeName}}</code>
@@ -3535,7 +3534,6 @@ that is a <a>document</a>.
    <dd>Its <a for=DocumentType>name</a>.
 
    <dt>{{DocumentFragment}}
-   <dt>{{ShadowRoot}}
    <dd>"<code>#document-fragment</code>".
   </dl>
 </dl>
@@ -3572,7 +3570,6 @@ the first matching statement, switching on the <a>context object</a>:
  <dd><dfn const for=Node>DOCUMENT_TYPE_NODE</dfn> (10);
 
  <dt>{{DocumentFragment}}
- <dt>{{ShadowRoot}}
  <dd><dfn const for=Node>DOCUMENT_FRAGMENT_NODE</dfn> (11).
 </dl>
 
@@ -3633,7 +3630,6 @@ the first matching statement, switching on the <a>context object</a>:
  <dd>Its <a for=DocumentType>name</a>.
 
  <dt>{{DocumentFragment}}
- <dt>{{ShadowRoot}}
  <dd>"<code>#document-fragment</code>".
 </dl>
 
@@ -3785,7 +3781,6 @@ following, switching on <a>context object</a>:
 
 <dl class=switch>
  <dt>{{DocumentFragment}}
- <dt>{{ShadowRoot}}
  <dt>{{Element}}
  <!--AttrExodus <dt>{{Attr}} -->
  <dd>The concatenation of <a>data</a> of all
@@ -3809,7 +3804,6 @@ the empty string instead, and then do as described below, switching on <a>contex
 
 <dl class=switch>
  <dt>{{DocumentFragment}}
- <dt>{{ShadowRoot}}
  <dt>{{Element}}
  <!--AttrExodus <dt>{{Attr}} -->
  <dd>
@@ -4320,7 +4314,6 @@ To <dfn export>locate a namespace</dfn> for a <var>node</var> using
 
  <dt>{{DocumentType}}
  <dt>{{DocumentFragment}}
- <dt>{{ShadowRoot}}
  <dd>Return null.
 
  <dt>Any other node
@@ -4358,7 +4351,6 @@ method must run these steps:
 
    <dt>{{DocumentType}}
    <dt>{{DocumentFragment}}
-   <dt>{{ShadowRoot}}
    <dd>Return null.
 
    <dt>Any other node

dom.html

@@ -1082,7 +1082,7 @@ <h3 class="heading settled" data-level="4.1" id="introduction-to-the-dom"><span
 concept is clear. Markup goes in, a <a data-link-type="dfn" href="#concept-tree">tree</a> of <a data-link-type="dfn" href="#concept-node">nodes</a> comes out.</p>
    <p class="note no-backref" role="note">The most excellent <a href="http://software.hixie.ch/utilities/js/live-dom-viewer/">Live DOM Viewer</a> can be used to explore this matter in more detail. </p>
    <h3 class="heading settled" data-level="4.2" id="node-trees"><span class="secno">4.2. </span><span class="content">Node tree</span><a class="self-link" href="#node-trees"></a></h3>
-   <p><code class="idl"><a data-link-type="idl" href="#document">Document</a></code>, <code class="idl"><a data-link-type="idl" href="#documenttype">DocumentType</a></code>, <code class="idl"><a data-link-type="idl" href="#documentfragment">DocumentFragment</a></code>, <code class="idl"><a data-link-type="idl" href="#shadowroot">ShadowRoot</a></code>, <code class="idl"><a data-link-type="idl" href="#element">Element</a></code>, <code class="idl"><a data-link-type="idl" href="#text">Text</a></code>, <code class="idl"><a data-link-type="idl" href="#processinginstruction">ProcessingInstruction</a></code>, and <code class="idl"><a data-link-type="idl" href="#comment">Comment</a></code> objects (simply called <dfn data-dfn-type="dfn" data-export="" id="concept-node">nodes<a class="self-link" href="#concept-node"></a></dfn>) <a data-link-type="dfn" href="#concept-tree-participate">participate</a> in a <a data-link-type="dfn" href="#concept-tree">tree</a>, simply named the <dfn data-dfn-type="dfn" data-export="" id="concept-node-tree">node tree<a class="self-link" href="#concept-node-tree"></a></dfn>. </p>
+   <p><code class="idl"><a data-link-type="idl" href="#document">Document</a></code>, <code class="idl"><a data-link-type="idl" href="#documenttype">DocumentType</a></code>, <code class="idl"><a data-link-type="idl" href="#documentfragment">DocumentFragment</a></code>, <code class="idl"><a data-link-type="idl" href="#element">Element</a></code>, <code class="idl"><a data-link-type="idl" href="#text">Text</a></code>, <code class="idl"><a data-link-type="idl" href="#processinginstruction">ProcessingInstruction</a></code>, and <code class="idl"><a data-link-type="idl" href="#comment">Comment</a></code> objects (simply called <dfn data-dfn-type="dfn" data-export="" id="concept-node">nodes<a class="self-link" href="#concept-node"></a></dfn>) <a data-link-type="dfn" href="#concept-tree-participate">participate</a> in a <a data-link-type="dfn" href="#concept-tree">tree</a>, simply named the <dfn data-dfn-type="dfn" data-export="" id="concept-node-tree">node tree<a class="self-link" href="#concept-node-tree"></a></dfn>. </p>
    <p>A <a data-link-type="dfn" href="#concept-node-tree">node tree</a> is constrained as follows, expressed as a relationship between the type of <a data-link-type="dfn" href="#concept-node">node</a> and its allowed <a data-link-type="dfn" href="#concept-tree-child">children</a>: </p>
    <dl>
     <dt><code class="idl"><a data-link-type="idl" href="#document">Document</a></code> 
@@ -1101,7 +1101,6 @@ <h3 class="heading settled" data-level="4.2" id="node-trees"><span class="secno"
        <p>Zero or more nodes each of which is <code class="idl"><a data-link-type="idl" href="#processinginstruction">ProcessingInstruction</a></code> or <code class="idl"><a data-link-type="idl" href="#comment">Comment</a></code>. </p>
      </ol>
     <dt><code class="idl"><a data-link-type="idl" href="#documentfragment">DocumentFragment</a></code> 
-    <dt><code class="idl"><a data-link-type="idl" href="#shadowroot">ShadowRoot</a></code> 
     <dt><code class="idl"><a data-link-type="idl" href="#element">Element</a></code> 
     <dd>
      <p>Zero or more nodes each of which is <code class="idl"><a data-link-type="idl" href="#element">Element</a></code>, <code class="idl"><a data-link-type="idl" href="#text">Text</a></code>, <code class="idl"><a data-link-type="idl" href="#processinginstruction">ProcessingInstruction</a></code>, or <code class="idl"><a data-link-type="idl" href="#comment">Comment</a></code>. </p>
@@ -2126,7 +2125,7 @@ <h3 class="heading settled" data-level="4.4" id="interface-node"><span class="se
 };
 </pre>
    <p class="note no-backref" role="note"><code class="idl"><a data-link-type="idl" href="#node">Node</a></code> is an abstract interface and does not exist as <a data-link-type="dfn" href="#concept-node">node</a>. It
-is used by all <a data-link-type="dfn" href="#concept-node">nodes</a> (<code class="idl"><a data-link-type="idl" href="#document">Document</a></code>, <code class="idl"><a data-link-type="idl" href="#documenttype">DocumentType</a></code>, <code class="idl"><a data-link-type="idl" href="#documentfragment">DocumentFragment</a></code>, <code class="idl"><a data-link-type="idl" href="#shadowroot">ShadowRoot</a></code>, <code class="idl"><a data-link-type="idl" href="#element">Element</a></code>, <code class="idl"><a data-link-type="idl" href="#text">Text</a></code>, <code class="idl"><a data-link-type="idl" href="#processinginstruction">ProcessingInstruction</a></code>, and <code class="idl"><a data-link-type="idl" href="#comment">Comment</a></code>). </p>
+is used by all <a data-link-type="dfn" href="#concept-node">nodes</a> (<code class="idl"><a data-link-type="idl" href="#document">Document</a></code>, <code class="idl"><a data-link-type="idl" href="#documenttype">DocumentType</a></code>, <code class="idl"><a data-link-type="idl" href="#documentfragment">DocumentFragment</a></code>, <code class="idl"><a data-link-type="idl" href="#element">Element</a></code>, <code class="idl"><a data-link-type="idl" href="#text">Text</a></code>, <code class="idl"><a data-link-type="idl" href="#processinginstruction">ProcessingInstruction</a></code>, and <code class="idl"><a data-link-type="idl" href="#comment">Comment</a></code>). </p>
    <p>Each <a data-link-type="dfn" href="#concept-node">node</a> has an associated <dfn data-dfn-for="Node" data-dfn-type="dfn" data-export="" id="concept-node-document">node document<a class="self-link" href="#concept-node-document"></a></dfn>, set upon creation,
 that is a <a data-link-type="dfn" href="#concept-document">document</a>.</p>
    <p class="note no-backref" role="note">A <a data-link-type="dfn" href="#concept-node">node</a>’s <a data-link-type="dfn" href="#concept-node-document">node document</a> can be changed by the <a data-link-type="dfn" href="#concept-node-adopt">adopt</a> algorithm. </p>
@@ -2150,7 +2149,7 @@ <h3 class="heading settled" data-level="4.4" id="interface-node"><span class="se
       <dt><code><code class="idl"><a data-link-type="idl" href="#node">Node</a></code> . <code class="idl"><a data-link-type="idl" href="#dom-node-document_type_node">DOCUMENT_TYPE_NODE</a></code></code> (10) 
       <dd><var>node</var> is a <a data-link-type="dfn" href="#concept-doctype">doctype</a>. 
       <dt><code><code class="idl"><a data-link-type="idl" href="#node">Node</a></code> . <code class="idl"><a data-link-type="idl" href="#dom-node-document_fragment_node">DOCUMENT_FRAGMENT_NODE</a></code></code> (11) 
-      <dd><var>node</var> is a <code class="idl"><a data-link-type="idl" href="#documentfragment">DocumentFragment</a></code> or <code class="idl"><a data-link-type="idl" href="#shadowroot">ShadowRoot</a></code> <a data-link-type="dfn" href="#concept-node">node</a>. 
+      <dd><var>node</var> is a <code class="idl"><a data-link-type="idl" href="#documentfragment">DocumentFragment</a></code> <a data-link-type="dfn" href="#concept-node">node</a>. 
      </dl>
     <dt><code><var>node</var> . <code class="idl"><a data-link-type="idl" href="#dom-node-nodename">nodeName</a></code></code> 
     <dd>
@@ -2170,7 +2169,6 @@ <h3 class="heading settled" data-level="4.4" id="interface-node"><span class="se
       <dt><code class="idl"><a data-link-type="idl" href="#documenttype">DocumentType</a></code> 
       <dd>Its <a data-link-type="dfn" href="#concept-doctype-name">name</a>. 
       <dt><code class="idl"><a data-link-type="idl" href="#documentfragment">DocumentFragment</a></code> 
-      <dt><code class="idl"><a data-link-type="idl" href="#shadowroot">ShadowRoot</a></code> 
       <dd>"<code>#document-fragment</code>". 
      </dl>
    </dl>
@@ -2190,7 +2188,6 @@ <h3 class="heading settled" data-level="4.4" id="interface-node"><span class="se
     <dt><code class="idl"><a data-link-type="idl" href="#documenttype">DocumentType</a></code> 
     <dd><dfn class="idl-code" data-dfn-for="Node" data-dfn-type="const" data-export="" id="dom-node-document_type_node">DOCUMENT_TYPE_NODE<a class="self-link" href="#dom-node-document_type_node"></a></dfn> (10); 
     <dt><code class="idl"><a data-link-type="idl" href="#documentfragment">DocumentFragment</a></code> 
-    <dt><code class="idl"><a data-link-type="idl" href="#shadowroot">ShadowRoot</a></code> 
     <dd><dfn class="idl-code" data-dfn-for="Node" data-dfn-type="const" data-export="" id="dom-node-document_fragment_node">DOCUMENT_FRAGMENT_NODE<a class="self-link" href="#dom-node-document_fragment_node"></a></dfn> (11). 
    </dl>
    <p>The <dfn class="idl-code" data-dfn-for="Node" data-dfn-type="attribute" data-export="" id="dom-node-nodename">nodeName<a class="self-link" href="#dom-node-nodename"></a></dfn> attribute’s getter, when invoked, must return
@@ -2209,7 +2206,6 @@ <h3 class="heading settled" data-level="4.4" id="interface-node"><span class="se
     <dt><code class="idl"><a data-link-type="idl" href="#documenttype">DocumentType</a></code> 
     <dd>Its <a data-link-type="dfn" href="#concept-doctype-name">name</a>. 
     <dt><code class="idl"><a data-link-type="idl" href="#documentfragment">DocumentFragment</a></code> 
-    <dt><code class="idl"><a data-link-type="idl" href="#shadowroot">ShadowRoot</a></code> 
     <dd>"<code>#document-fragment</code>". 
    </dl>
    <hr>
@@ -2289,7 +2285,6 @@ <h3 class="heading settled" data-level="4.4" id="interface-node"><span class="se
 following, switching on <a data-link-type="dfn" href="#context-object">context object</a>: </p>
    <dl class="switch">
     <dt><code class="idl"><a data-link-type="idl" href="#documentfragment">DocumentFragment</a></code> 
-    <dt><code class="idl"><a data-link-type="idl" href="#shadowroot">ShadowRoot</a></code> 
     <dt><code class="idl"><a data-link-type="idl" href="#element">Element</a></code> 
     <dd>The concatenation of <a data-link-type="dfn" href="#concept-cd-data">data</a> of all
  the <code class="idl"><a data-link-type="idl" href="#text">Text</a></code> <a data-link-type="dfn" href="#concept-node">node</a> <a data-link-type="dfn" href="#concept-tree-descendant">descendants</a> of the <a data-link-type="dfn" href="#context-object">context object</a>, in <a data-link-type="dfn" href="#concept-tree-order">tree order</a>. 
@@ -2304,7 +2299,6 @@ <h3 class="heading settled" data-level="4.4" id="interface-node"><span class="se
 the empty string instead, and then do as described below, switching on <a data-link-type="dfn" href="#context-object">context object</a>: </p>
    <dl class="switch">
     <dt><code class="idl"><a data-link-type="idl" href="#documentfragment">DocumentFragment</a></code> 
-    <dt><code class="idl"><a data-link-type="idl" href="#shadowroot">ShadowRoot</a></code> 
     <dt><code class="idl"><a data-link-type="idl" href="#element">Element</a></code> 
     <dd>
      <ol>
@@ -2539,7 +2533,6 @@ <h3 class="heading settled" data-level="4.4" id="interface-node"><span class="se
      </ol>
     <dt><code class="idl"><a data-link-type="idl" href="#documenttype">DocumentType</a></code> 
     <dt><code class="idl"><a data-link-type="idl" href="#documentfragment">DocumentFragment</a></code> 
-    <dt><code class="idl"><a data-link-type="idl" href="#shadowroot">ShadowRoot</a></code> 
     <dd>Return null. 
     <dt>Any other node 
     <dd>
@@ -2562,7 +2555,6 @@ <h3 class="heading settled" data-level="4.4" id="interface-node"><span class="se
    otherwise. 
       <dt><code class="idl"><a data-link-type="idl" href="#documenttype">DocumentType</a></code> 
       <dt><code class="idl"><a data-link-type="idl" href="#documentfragment">DocumentFragment</a></code> 
-      <dt><code class="idl"><a data-link-type="idl" href="#shadowroot">ShadowRoot</a></code> 
       <dd>Return null. 
       <dt>Any other node 
       <dd>Return the result of <a data-link-type="dfn" href="#locate-a-namespace-prefix">locating a namespace prefix</a> for its <a data-link-type="dfn" href="#parent-element">parent element</a>, or if that is null, null.