A bunch more documentation.

tools/dom/docs/docs.json

Index: tools/dom/docs/docs.json
diff --git a/tools/dom/docs/docs.json b/tools/dom/docs/docs.json
index a8c16aa29366a7fc115e2c05033feeb9f069f5b1..89087ea78dcce4d6570073e8a86a7bf6fedc6eb9 100644
--- a/tools/dom/docs/docs.json
+++ b/tools/dom/docs/docs.json
@@ -104,7 +104,7 @@
           "/// Deprecated: use new Element.tag(tagName) instead."
         ],
         "createTouchList": [
-          "/// Use the [TouchList] constructor isntead."
+          "/// Use the [TouchList] constructor instead."
         ],
         "getCSSCanvasContext": [
           "/// Moved to [HtmlDocument]."
@@ -288,6 +288,40 @@
           "   * of [common MIME types](http://en.wikipedia.org/wiki/Internet_media_type#List_of_common_media_types)",
           "   */"
         ],
+        "readyState": [
+          "/**",
+          "   * Indicator of the current state of the request:",
+          "   *",
+          "   * <table>",
+          "   *   <tr>",
+          "   *     <td>Value</td>",
+          "   *     <td>State</td>",
+          "   *     <td>Meaning</td>",
+          "   *   </tr>",
+          "   *   <tr>",
+          "   *     <td>0</td>",
+          "   *     <td>unsent</td>",
+          "   *     <td><code>open()</code> has not yet been called</td>",
+          "   *   </tr>",
+          "   *   <tr>",
+          "   *     <td>1</td>",
+          "   *     <td>opened</td>",
+          "   *     <td><code>send()</code> has not yet been called</td>",
+          "   *   </tr>",
+          "   *   <tr>",
+          "   *     <td>2</td>",
+          "   *     <td>headers received</td>",
+          "   *     <td><code>sent()</code> has been called; response headers and <code>status</code> are available</td>",
+          "   *   </tr>",
+          "   *   <tr>",
+          "   *     <td>3</td> <td>loading</td> <td><code>responseText</code> holds some data</td>",
+          "   *   </tr>",
+          "   *   <tr>",
+          "   *     <td>4</td> <td>done</td> <td>request is complete</td>",
+          "   *   </tr>",
+          "   * </table>",
+          "   */"
+        ],
         "response": [
           "/**",
           "   * The data received as a reponse from the request.",
@@ -314,6 +348,15 @@
           "   * See also: [MDN responseType](https://developer.mozilla.org/en-US/docs/DOM/XMLHttpRequest#responseType)",
           "   */"
         ],
+        "responseXML": [
+          "/**",
+          "   * The request response, or null on failure.",
+          "   *",
+          "   * The response is processed as",
+          "   * `text/xml` stream, unless responseType = 'document' and the request is",
+          "   * synchronous.",
+          "   */"
+        ],
         "send": [
           "/**",
           "   * Send the request with any given `data`.",
@@ -361,7 +404,8 @@
           "   *",
           "   * is the (more verbose) equivalent of",
           "   *",
-          "   *     var request = new HttpRequest.get('http://dartlang.org', (event) => print('Request complete'));",
+          "   *     var request = new HttpRequest.get('http://dartlang.org',",
+          "   *         (event) => print('Request complete'));",
           "   */"
         ]
       }