Dart SDK Spelling b, c, and d.

tools/dom/src/dart2js_KeyEvent.dart

 /**
  * A custom KeyboardEvent that attempts to eliminate cross-browser
  * inconsistencies, and also provide both keyCode and charCode information
  * for all key events (when such information can be determined).
  *
  * KeyEvent tries to provide a higher level, more polished keyboard event
  * information on top of the "raw" [KeyboardEvent].
  *
  * The mechanics of using KeyEvents is a little different from the underlying
  * [KeyboardEvent]. To use KeyEvents, you need to create a stream and then add
@@ skipping 88 matching lines @@
       EventTarget currentTarget}) {
     if (view == null) {
       view = window;
     }
 
     var eventObj;
     // In these two branches we create an underlying native KeyboardEvent, but
     // we set it with our specified values. Because we are doing custom setting
     // of certain values (charCode/keyCode, etc) only in this class (as opposed
     // to KeyboardEvent) and the way we set these custom values depends on the
-    // type of underlying JS object, we do all the contruction for the
+    // type of underlying JS object, we do all the construction for the
     // underlying KeyboardEvent here.
     if (canUseDispatchEvent) {
       // Currently works in everything but Internet Explorer.
       eventObj = new Event.eventType('Event', type,
           canBubble: canBubble, cancelable: cancelable);
 
       JS('void', '#.keyCode = #', eventObj, keyCode);
       JS('void', '#.which = #', eventObj, keyCode);
       JS('void', '#.charCode = #', eventObj, charCode);
 
@@ skipping 129 matching lines @@
   }
 
   @Experimental() // untriaged
   bool getModifierState(String keyArgument) => throw new UnimplementedError();
   @Experimental() // untriaged
   int get location => throw new UnimplementedError();
   @Experimental() // untriaged
   bool get repeat => throw new UnimplementedError();
   dynamic get _get_view => throw new UnimplementedError();
 }