Align with origin changes in HTML

Fixes #195.

dom.bs

@@ -77,10 +77,7 @@ urlPrefix: https://html.spec.whatwg.org/multipage/
             text: concept-document-bc
             text: concept-document-window
             text: unit of related similar-origin browsing contexts
-            text: origin
-            text: effective script origin
-            text: origin alias; url: #concept-origin-alias
-            text: Unicode serialization of an origin; url: #unicode-serialisation-of-an-origin
+            text: origin; url: concept-origin
         urlPrefix: infrastructure.html
             text: in parallel
 url: https://w3c.github.io/DOM-Parsing/#widl-Range-createContextualFragment-DocumentFragment-DOMString-fragment
@@ -4288,9 +4285,7 @@ Unless stated otherwise, a <a>document</a>'s <a for=Document>base URL</a> is
 <a for=Document>type</a> is "<code>xml</code>", and its
 <a for=Document>mode</a> is "<code>no-quirks</code>".
 
-Unless stated otherwise, a <a>document</a>'s <a>origin</a> is a globally unique identifier
-and its <a>effective script origin</a> is an <a lt="origin alias">alias</a> of that
-<a>origin</a>. [[!HTML]]
+Unless stated otherwise, a <a>document</a>'s <a>origin</a> is a new <a>opaque origin</a>. [[!HTML]]
 
 A <a>document</a> is said to be an <dfn export>XML document</dfn> if its
 <a for=Document>type</a> is "<code>xml</code>", and an <dfn export>HTML document</dfn>
@@ -4352,17 +4347,9 @@ null if <var>event</var>'s <code for=Event>type</code> attribute value is "<code
  <a for=Document>content type</a>.
 </dl>
 
-The <dfn constructor for=Document><code>Document()</code></dfn> constructor
-must return a new <a>document</a> whose
-<a>origin</a> is an
-<a lt="origin alias">alias</a> to the
-<a>origin</a> of the global object's associated
-<a>document</a>, and
-<a>effective script origin</a> is an
-<a lt="origin alias">alias</a> to the
-<a>effective script origin</a> of the
-global object's associated <a>document</a>.
-[[!HTML]]
+<p>The <dfn constructor for=Document><code>Document()</code></dfn> constructor, when invoked, must
+return a new <a>document</a> whose <a>origin</a> is the <a>origin</a> of the global object's
+associated <a>document</a>. [[!HTML]]
 
 <p class="note no-backref">Unlike
 {{createDocument()}}
@@ -4378,7 +4365,7 @@ The <dfn attribute for=Document><code>URL</code></dfn> attribute's getter and
 <a for=Document>URL</a>, <a lt="URL serializer" spec=url>serialized</a>.
 
 The <dfn attribute for=Document><code>origin</code></dfn> attribute's getter must return the
-<a lt="Unicode serialization of an origin">Unicode serialization</a> of <a>context object</a>'s
+<a lt="Unicode serialisation of an origin">Unicode serialization</a> of <a>context object</a>'s
 <a>origin</a>.
 
 The <dfn attribute for=Document><code>compatMode</code></dfn> attribute's getter must
@@ -5001,19 +4988,8 @@ method must run these steps:
  <a>append</a>
  <var>element</var> to <var>document</var>.
 
- <li><var>document</var>'s
- <a>origin</a> is an
- <a lt="origin alias">alias</a> to the
- <a>origin</a> of the
- <a>context object</a>'s associated
- <a>document</a>, and
- <var>document</var>'s
- <a>effective script origin</a> is an
- <a lt="origin alias">alias</a> to the
- <a>effective script origin</a> of the
- <a>context object</a>'s associated
- <a>document</a>.
- [[!HTML]]
+ <li><var>document</var>'s <a>origin</a> is the <a>origin</a> of the <a>context object</a>'s
+ associated <a>document</a>. [[!HTML]]
 
  <li>Return <var>document</var>.
 </ol>
@@ -5052,19 +5028,8 @@ method, when invoked, must run these steps:
  <li><a>Append</a> a new <{body}> element in the <a>HTML namespace</a>, to the <{html}>
  element created earlier.
 
- <li><var>doc</var>'s
- <a>origin</a> is an
- <a lt="origin alias">alias</a> to the
- <a>origin</a> of the
- <a>context object</a>'s associated
- <a>document</a>, and
- <var>doc</var>'s
- <a>effective script origin</a> is an
- <a lt="origin alias">alias</a> to the
- <a>effective script origin</a> of the
- <a>context object</a>'s associated
- <a>document</a>.
- [[!HTML]]
+ <li><var>doc</var>'s <a>origin</a> is the <a>origin</a> of the <a>context object</a>'s associated
+ <a>document</a>. [[!HTML]]
 
  <li>Return <var>doc</var>.
 </ol>