Add note about sorting name lists by code unit (Resolves #179)

Uses suggested text c/o @aphillips

index.bs

@@ -60,6 +60,7 @@ spec: ecma262; urlPrefix: https://tc39.github.io/ecma262/
         text: Promise; url: sec-promise-objects
         text: Realm; url: realm
         text: current Realm; url: current-realm
+        text: Array.prototype.sort; url: sec-array.prototype.sort
 spec: webidl; urlPrefix: https://heycam.github.io/webidl/
     type: dfn
         text: sequence<DOMString>; url: idl-sequence
@@ -366,9 +367,6 @@ from the database. Ideally the user will never see this.
 <h2 id=constructs>Constructs</h2>
 <!-- ============================================================ -->
 
-A <dfn>sorted list</dfn> is a list containing strings
-sorted in ascending order by code unit.
-
 A <dfn>name</dfn> is a string equivalent to a {{DOMString}};
 that is, an arbitrary sequence of 16-bit code units of any length,
 including the empty string. [=/Names=] are always compared as
@@ -386,6 +384,18 @@ opaque sequences of 16-bit code units.
   can store.
 </aside>
 
+A <dfn>sorted name list</dfn> is a list containing [=/names=]
+sorted in ascending order by 16-bit code unit.
+
+<details class=note>
+  This matches the [=Array.prototype.sort=] on an [=Array=] of
+  [=Strings=]. This ordering compares the 16-bit code units in each
+  string, producing a highly efficient, consistent, and deterministic
+  sort order. The resulting list will not match any particular
+  alphabet or lexicographical order, particularly for code points
+  represented by a surrogate pair.
+</details>
+
 
 <!-- ============================================================ -->
 <h3 id=database-construct>Database</h3>
@@ -2468,7 +2478,7 @@ must return this [=/connection=]'s
 </div>
 
 The <dfn attribute for=IDBDatabase>objectStoreNames</dfn> attribute's
-getter must return a {{DOMStringList}} associated with a [=sorted list=] of the [=object-store/names=] of
+getter must return a {{DOMStringList}} associated with a [=sorted name list=] of the [=object-store/names=] of
 the [=/object stores=] in this [=/connection=]'s [=object store set=].
 
 <details class=note>
@@ -2841,7 +2851,7 @@ object has no effect on the [=/object store=].
 
 
 The <dfn attribute for=IDBObjectStore>indexNames</dfn> attribute's
-getter must return a {{DOMStringList}} associated with a [=sorted list=] of the [=index/names=]
+getter must return a {{DOMStringList}} associated with a [=sorted name list=] of the [=index/names=]
 of [=/indexes=] in this [=/object store handle=]'s
 [=index set=].
 
@@ -5055,12 +5065,12 @@ The <dfn attribute for=IDBTransaction>objectStoreNames</dfn>
 attribute's getter must run the following steps:
 
 1. If this [=/transaction=] is an [=upgrade transaction=],
-    return a {{DOMStringList}} associated with a [=sorted list=] of the [=object-store/names=]
+    return a {{DOMStringList}} associated with a [=sorted name list=] of the [=object-store/names=]
     of the [=/object stores=] in this
     [=/transaction=]'s [=/connection=]'s [=object store
     set=].
 
-2. Otherwise, return a {{DOMStringList}} associated with a [=sorted list=] of the
+2. Otherwise, return a {{DOMStringList}} associated with a [=sorted name list=] of the
     [=object-store/names=] of the [=/object stores=] in
     this [=/transaction=]'s [=transaction/scope=].