Editorial: unconjugate "pre-insertion" and "pre-removing"

Also stop exporting "ensure pre-insert validity" and modernize it a bit.

Co-authored-by: Anne van Kesteren <[email protected]>

Author: domfarolino

dom.bs

@@ -2611,9 +2611,9 @@ steps:
 
 <h4 id=mutation-algorithms>Mutation algorithms</h4>
 
-<p>To
-<dfn export for=Node id=concept-node-ensure-pre-insertion-validity>ensure pre-insertion validity</dfn>
-of a <var>node</var> into a <var>parent</var> before a <var>child</var>, run these steps:
+<p>To <dfn id=concept-node-ensure-pre-insertion-validity>ensure pre-insert validity</dfn> of a
+<a for=/>node</a> <var>node</var> into a <a for=/>node</a> <var>parent</var> before a
+<a for=/>node</a> <var>child</var>:
 
 <ol>
  <li><p>If <var>parent</var> is not a {{Document}}, {{DocumentFragment}}, or {{Element}}
@@ -2667,7 +2667,7 @@ of a <var>node</var> into a <var>parent</var> before a <var>child</var>, run the
 <var>parent</var> before a <var>child</var>, run these steps:
 
 <ol>
- <li><p><a>Ensure pre-insertion validity</a> of <var>node</var> into <var>parent</var> before
+ <li><p><a>Ensure pre-insert validity</a> of <var>node</var> into <var>parent</var> before
  <var>child</var>.
 
  <li><p>Let <var>referenceChild</var> be <var>child</var>.
@@ -3039,7 +3039,7 @@ optional <i>suppress observers flag</i>, run these steps:
 
  <li><p>For each {{NodeIterator}} object <var>iterator</var> whose
  <a for=traversal>root</a>'s <a for=Node>node document</a> is <var>node</var>'s
- <a for=Node>node document</a>, run the <a><code>NodeIterator</code> pre-removing steps</a> given
+ <a for=Node>node document</a>, run the <a><code>NodeIterator</code> pre-remove steps</a> given
  <var>node</var> and <var>iterator</var>.
 
  <li><p>Let <var>oldPreviousSibling</var> be <var>node</var>'s <a>previous sibling</a>.
@@ -3275,8 +3275,7 @@ are:
  <li><p>Let <var>node</var> be the result of <a>converting nodes into a node</a> given
  <var>nodes</var> and <a>this</a>'s <a for=Node>node document</a>.
 
- <li><p><a>Ensure pre-insertion validity</a> of <var>node</var> into <a>this</a> before
- null.
+ <li><p><a>Ensure pre-insert validity</a> of <var>node</var> into <a>this</a> before null.
 
  <li><p><a for=Node>Replace all</a> with <var>node</var> within <a>this</a>.
 </ol>
@@ -9058,13 +9057,12 @@ result of <a for="live range">cloning the contents</a> of <a>this</a>.
  <!-- IE9 and Chrome 12 dev throw an exception before splitting the text
  node if the insertBefore() is going to throw an exception (at least if the
  new node is the parent of the start node, for instance). Firefox 4.0 and
- Opera 11.00 don't.  Now that we have "ensure pre-insertion validity," we go
+ Opera 11.00 don't.  Now that we have "ensure pre-insert validity," we go
  with the IE/Chrome behavior because it's more correct.
 
  IE9 doesn't call splitText() if the offset is 0. This makes sense, but I go
  with what all other browsers do. -->
- <li><a>Ensure pre-insertion validity</a>
- of <var>node</var> into <var>parent</var> before
+ <li><a>Ensure pre-insert validity</a> of <var>node</var> into <var>parent</var> before
  <var>referenceNode</var>.
 
  <li>If <var>range</var>'s <a for=range>start node</a> is a {{Text}} <a for=/>node</a>, set
@@ -9403,8 +9401,8 @@ filter matches any <a for=/>node</a>.
 <a for=traversal>active flag</a>, <a for=traversal>root</a>, <a for=traversal>whatToShow</a>, and
 <a for=traversal>filter</a> as well.
 
-<p>The <dfn><code>NodeIterator</code> pre-removing steps</dfn> given a <var>nodeIterator</var> and
-<var>toBeRemovedNode</var>, are as follows:
+<p>The <dfn id=nodeiterator-pre-removing-steps><code>NodeIterator</code> pre-remove steps</dfn>
+given a <var>nodeIterator</var> and <var>toBeRemovedNode</var>, are as follows:
 
 <ol>
  <li><p>If <var>toBeRemovedNode</var> is not an <a for=tree>inclusive ancestor</a> of