[gxml] Revert "Revert "Attr.vala: update documentation, specifically references to spec""

[Richard Hans Schwarting <rschwart src gnome org>]

commit 364ebc32f0ae052c5461eb1c6f0338c0527e3c0d
Author: Richard Schwarting <aquarichy gmail com>
Date:   Thu Aug 22 11:04:33 2013 -0400

    Revert "Revert "Attr.vala: update documentation, specifically references to spec""
    
    This reverts commit ea6ea7279f4db553b23a08fbeb487bc8a0fc8c92.

 gxml/Attr.vala |   17 ++++++++++++++---
 1 files changed, 14 insertions(+), 3 deletions(-)
---
diff --git a/gxml/Attr.vala b/gxml/Attr.vala
index cc0669f..1eff420 100644
--- a/gxml/Attr.vala
+++ b/gxml/Attr.vala
@@ -44,8 +44,10 @@ namespace GXml {
         *
         * These represent name=value attributes associated with XML
         * { link GXml.Element}s. Values are often represented as strings but can
-        * also be more complex subtrees for some nodes.  For more, see:
-        * [[http://www.w3.org/TR/DOM-Level-1/level-one-core.html#ID-637646024]]
+        * also be more complex subtrees for some nodes.
+        *
+        * Version: DOM Level 1 Core
+        * URL: [[http://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-637646024]]
         */
        public class Attr : DomNode {
                /**
@@ -170,6 +172,9 @@ namespace GXml {
 
                /**
                 * The name of the attribute's name=value pair.
+                *
+                * Version: DOM Level 1 Core
+                * URL: [[http://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-1112119403]]
                 */
                public string name {
                        get {
@@ -185,8 +190,11 @@ namespace GXml {
                 * underlying document. If the attribute is changed,
                 * it is set to false.
                 *
-                * #todo: this requires support from the DTD, and
+                * @todo: this requires support from the DTD, and
                 * probably libxml2's xmlAttribute
+                *
+                * Version: DOM Level 1 Core
+                * URL: [[http://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-862529273]]
                 */
                public bool specified {
                        // STUB
@@ -199,6 +207,9 @@ namespace GXml {
                 * It is a stringified version of the value, which can
                 * also be accessed as a tree node structure of
                 * child_nodes.
+                *
+                * Version: DOM Level 1 Core
+                * URL: [[http://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-221662474]]
                 */
                public string value {
                        get {