Clarify "same" in validate and fixup

Also list m13, m14, etc., in order (editorial).

Author: zcorpan

geometry/Overview.bs

@@ -826,29 +826,28 @@ run the following steps:
 
    <ul>
     <li><p>{{DOMMatrixInit/a}} and {{DOMMatrixInit/m11}} are both present and their values are not
-    the same.
+    the <a for="WebIDL unrestricted double">same</a>.
 
     <li><p>{{DOMMatrixInit/b}} and {{DOMMatrixInit/m12}} are both present and their values are not
-    the same.
+    the <a for="WebIDL unrestricted double">same</a>.
 
     <li><p>{{DOMMatrixInit/c}} and {{DOMMatrixInit/m21}} are both present and their values are not
-    the same.
+    the <a for="WebIDL unrestricted double">same</a>.
 
     <li><p>{{DOMMatrixInit/d}} and {{DOMMatrixInit/m22}} are both present and their values are not
-    the same.
+    the <a for="WebIDL unrestricted double">same</a>.
 
     <li><p>{{DOMMatrixInit/e}} and {{DOMMatrixInit/m41}} are both present and their values are not
-    the same.
+    the <a for="WebIDL unrestricted double">same</a>.
 
     <li><p>{{DOMMatrixInit/f}} and {{DOMMatrixInit/m42}} are both present and their values are not
-    the same.
-
-    <li><p>{{DOMMatrixInit/is2D}} is <code>true</code> and at least one of
-    {{DOMMatrixInit/m31}}, {{DOMMatrixInit/m32}}, {{DOMMatrixInit/m13}}, {{DOMMatrixInit/m23}},
-    {{DOMMatrixInit/m43}}, {{DOMMatrixInit/m14}}, {{DOMMatrixInit/m24}}, {{DOMMatrixInit/m34}}
-    are present with a value other than ''0'',
-    or at least one of {{DOMMatrixInit/m33}}, {{DOMMatrixInit/m44}}
-    are present with a value other than ''1''.
+    the <a for="WebIDL unrestricted double">same</a>.
+
+    <li><p>{{DOMMatrixInit/is2D}} is <code>true</code> and at least one of {{DOMMatrixInit/m13}},
+    {{DOMMatrixInit/m14}}, {{DOMMatrixInit/m23}}, {{DOMMatrixInit/m24}}, {{DOMMatrixInit/m31}},
+    {{DOMMatrixInit/m32}}, {{DOMMatrixInit/m34}}, {{DOMMatrixInit/m43}} are present with a value
+    other than ''0'', or at least one of {{DOMMatrixInit/m33}}, {{DOMMatrixInit/m44}} are present
+    with a value other than ''1''.
    </ul>
 
   <li><p>If {{DOMMatrixInit/m11}} is not present then set it to the value of member
@@ -869,19 +868,21 @@ run the following steps:
   <li><p>If {{DOMMatrixInit/m42}} is not present then set it to the value of member
   {{DOMMatrixInit/f}}, or value ''0'' if {{DOMMatrixInit/f}} is also not present.
 
-  <li><p>If {{DOMMatrixInit/is2D}} is not present and at least one of {{DOMMatrixInit/m31}},
-  {{DOMMatrixInit/m32}}, {{DOMMatrixInit/m13}}, {{DOMMatrixInit/m23}}, {{DOMMatrixInit/m43}},
-  {{DOMMatrixInit/m14}}, {{DOMMatrixInit/m24}}, {{DOMMatrixInit/m34}} are present with a value other
+  <li><p>If {{DOMMatrixInit/is2D}} is not present and at least one of {{DOMMatrixInit/m13}},
+  {{DOMMatrixInit/m14}}, {{DOMMatrixInit/m23}}, {{DOMMatrixInit/m24}}, {{DOMMatrixInit/m31}},
+  {{DOMMatrixInit/m32}}, {{DOMMatrixInit/m34}}, {{DOMMatrixInit/m43}} are present with a value other
   than ''0'', or at least one of {{DOMMatrixInit/m33}}, {{DOMMatrixInit/m44}} are present with a
   value other than ''1'', set {{DOMMatrixInit/is2D}} to <code>false</code>.
 
   <li><p>If {{DOMMatrixInit/is2D}} is still not present, set it to <code>true</code>.
 </ol>
 
-<p>For the purpose of the algorithm above, two WebIDL unrestricted double values are the same if
-they have identical IEEE 754 double-precision bit patterns.
+<p>For the purpose of the algorithm above, two WebIDL unrestricted double values are the <dfn
+for="WebIDL unrestricted double">same</dfn> if they have identical IEEE 754 double-precision bit
+patterns.
 
-<p class=note>This means that two ''NaN'' values are the same.
+<p class=note>This means that two ''NaN'' values are the <a for="WebIDL unrestricted
+double">same</a>, but ''0'' and ''-0'' are not the <a for="WebIDL unrestricted double">same</a>.
 
 
 <h3 id=dommatrix-create>Creating DOMMatrixReadOnly and DOMMatrix objects</h3>
@@ -896,9 +897,9 @@ they have identical IEEE 754 double-precision bit patterns.
  element</a>, <a for=matrix>m22 element</a>, <a for=matrix>m41 element</a> and <a for=matrix>m42
  element</a> to the values of <var>init</var> in order starting with the first value.
 
- <li><p>Set <a for=matrix>m31 element</a>, <a for=matrix>m32 element</a>, <a for=matrix>m13
- element</a>, <a for=matrix>m23 element</a>, <a for=matrix>m43 element</a>, <a for=matrix>m14
- element</a>, <a for=matrix>m24 element</a> and <a for=matrix>m34 element</a> to ''0''.
+ <li><p>Set <a for=matrix>m13 element</a>, <a for=matrix>m14 element</a>, <a for=matrix>m23
+ element</a>, <a for=matrix>m24 element</a>, <a for=matrix>m31 element</a>, <a for=matrix>m32
+ element</a>, <a for=matrix>m34 element</a>, and <a for=matrix>m43 element</a> to ''0''.
 
  <li><p>Set <a for=matrix>m33 element</a> and <a for=matrix>m44 element</a> to ''1''.
 
@@ -1078,9 +1079,9 @@ method on {{DOMMatrix}} must follow these steps:
 
 <p>The following attributes {{DOMMatrixReadOnly/m11}} to {{DOMMatrixReadOnly/m44}} correspond to the
 16 items of the matrix interfaces. For the {{DOMMatrix}} interface, if the attributes
-{{DOMMatrixReadOnly/m31}}, {{DOMMatrixReadOnly/m32}}, {{DOMMatrixReadOnly/m13}},
-{{DOMMatrixReadOnly/m23}}, {{DOMMatrixReadOnly/m43}}, {{DOMMatrixReadOnly/m14}},
-{{DOMMatrixReadOnly/m24}}, {{DOMMatrixReadOnly/m34}} are set to something else than ''0'' or
+{{DOMMatrixReadOnly/m13}}, {{DOMMatrixReadOnly/m14}}, {{DOMMatrixReadOnly/m23}},
+{{DOMMatrixReadOnly/m24}}, {{DOMMatrixReadOnly/m31}}, {{DOMMatrixReadOnly/m32}},
+{{DOMMatrixReadOnly/m34}}, or {{DOMMatrixReadOnly/m43}} are set to something else than ''0'' or
 {{DOMMatrixReadOnly/m33}}, {{DOMMatrixReadOnly/m44}} are set to something else than ''1'' set <a
 for=matrix>is 2D</a> to <code>false</code>.