Editorial: expose Node's textContent getter and setter steps

These will be used by the Trusted Types (and eventually HTML once upstreamed) as part of shadowing this attribute to HTMLScriptElement.

dom.bs

@@ -4286,24 +4286,27 @@ empty string instead, and then do as described below, switching on the interface
  <dd><p>Do nothing.
 </dl>
 
-<p>The <dfn attribute for=Node><code>textContent</code></dfn> getter steps are to return the
-following, switching on the interface <a>this</a> <a>implements</a>:
+<p>To <dfn export>get text content</dfn> with a <a for=/>node</a> <var>node</var>,
+return the following, switching on the interface <var>node</var> <a>implements</a>:
 
 <dl class=switch>
  <dt>{{DocumentFragment}}
  <dt>{{Element}}
- <dd>The <a>descendant text content</a> of <a>this</a>.
+ <dd>The <a>descendant text content</a> of <var>node</var>.
 
  <dt>{{Attr}}
- <dd><a>this</a>'s <a for=Attr>value</a>.
+ <dd><var>node</var>'s <a for=Attr>value</a>.
 
  <dt>{{CharacterData}}
- <dd><a>this</a>'s <a for=CharacterData>data</a>.
+ <dd><var>node</var>'s <a for=CharacterData>data</a>.
 
  <dt>Otherwise
  <dd>Null.
 </dl>
 
+<p>The <dfn attribute for=Node><code>textContent</code></dfn> getter steps are to
+return the result of running <a>get text content</a> with <a>this</a>.
+
 <p>To <dfn export>string replace all</dfn> with a string <var>string</var> within a
 <a for=/>node</a> <var>parent</var>, run these steps:
 
@@ -4317,26 +4320,28 @@ following, switching on the interface <a>this</a> <a>implements</a>:
  <li><p><a for=Node>Replace all</a> with <var>node</var> within <var>parent</var>.
 </ol>
 
-<p>The {{Node/textContent}} setter steps are to, if the given value is null, act as if it was the
-empty string instead, and then do as described below, switching on the interface <a>this</a>
-<a>implements</a>:
+<p>To <dfn export>set text content</dfn> with a <a for=/>node</a> <var>node</var> and a string <var>value</var>,
+do as defined below, switching on the interface <var>node</var> <a>implements</a>:
 
 <dl class=switch>
  <dt>{{DocumentFragment}}
  <dt>{{Element}}
- <dd><p><a>String replace all</a> with the given value within <a>this</a>.
+ <dd><p><a>String replace all</a> with <var>value</var> within <var>node</var>.
 
  <dt>{{Attr}}
- <dd><p><a>Set an existing attribute value</a> with <a>this</a> and the given value.
+ <dd><p><a>Set an existing attribute value</a> with <var>node</var> and <var>value</var>.
 
  <dt>{{CharacterData}}
- <dd><p><a>Replace data</a> with node <a>this</a>, offset 0, count <a>this</a>'s
- <a for=Node>length</a>, and data the given value.
+ <dd><p><a>Replace data</a> with node <var>node</var>, offset 0, count <var>node</var>'s
+ <a for=Node>length</a>, and data <var>value</var>.
 
  <dt>Otherwise
  <dd><p>Do nothing.
 </dl>
 
+<p>The {{Node/textContent}} setter steps are to, if the given value is null, act as if it was the
+empty string instead, and then run <a>set text content</a> with <a>this</a> and the given value.
+
 <hr>
 
 <dl class=domintro>