Added a lot more documentation to Window.

sdk/lib/html/src/CrossFrameTypes.dart

Index: sdk/lib/html/src/CrossFrameTypes.dart
diff --git a/sdk/lib/html/src/CrossFrameTypes.dart b/sdk/lib/html/src/CrossFrameTypes.dart
index 8f8134d62b61efc0eb31b5b32f14cad8c4a13fdb..f713aa03afdc24d9c4c5560cfb28924ba58dd5a2 100644
--- a/sdk/lib/html/src/CrossFrameTypes.dart
+++ b/sdk/lib/html/src/CrossFrameTypes.dart
@@ -22,12 +22,67 @@ part of html;
  */
 abstract class Window {
   // Fields.
+
+  /**
+   * The current location of this window.
+   *
+   *     Location currentLocation = window.location;
+   *     print(currentLocation.href); // 'http://www.example.com:80/'
+   */
   Location get location;
   History get history;
 
+  /**
+   * Indicates whether this window is closed.
+   *
+   *     print(window.closed); // 'false'
+   *     window.close();
+   *     print(window.closed); // 'true'
+   */
   bool get closed;
+
+  /**
+   * A reference to the [Window] that opened this one.

[Kathy Walrath, 2012/11/20 01:51:24]

Again, [Window] -> window. (I'm not sure whether x-refs in summaries will be
supported, and they seem questionable in general -- better to make the summary
as simple as possible.)

[Andrei Mouravski, 2012/11/20 06:28:47]

Done.

+   *
+   *     Window thisWindow = window;
+   *     Window otherWindow = thisWindow.open('http://www.example.com/', 'foo');
+   *     print(otherWindow.opener == thisWindow); // 'true'
+   */
   Window get opener;
+
+  /**
+   * A reference to the parent of this window.
+   *
+   * If this [Window] has no parent, [parent] will return a reference to
+   * the [Window] itself.
+   *
+   *     IFrameElement myIFrame = new IFrameElement();
+   *     window.document.body.elements.add(myIFrame);
+   *     print(myIframe.contentWindow.parent == window) // 'true'
+   *
+   *     print(window.parent == window) // 'true'
+   */
   Window get parent;
+
+  /**
+   * A reference to the topmost window in the window heirarchy.

[Kathy Walrath, 2012/11/20 01:51:24]

heirarchy -> hierarchy 

(Tough word to spell. I had to look it up to be sure!)

+   *
+   * If this [Window] is the topmost [Window], [top] will return a reference to
+   * the [Window] itself.
+   *
+   *     // Add an IFrame to the current window.
+   *     IFrameElement myIFrame = new IFrameElement();
+   *     window.document.body.elements.add(myIFrame);
+   *
+   *     // Add an IFrame inside of the other IFrame.
+   *     IFrameElement innerIFrame = new IFrameElement();
+   *     myIFrame.elements.add(innerIFrame);
+   *
+   *     print(myIframe.contentWindow.top == window) // 'true'
+   *     print(innerIFrame.contentWindow.top == window) // 'true'
+   *
+   *     print(window.top == window) // 'true'
+   */
   Window get top;
 
   // Methods.