Dart SDK Spelling b, c, and d.

tools/dom/docs/docs.json

 {
   "dart.dom.html": {
     "AbstractWorker": {
       "members": {
         "errorEvent": [
           "/**",
           "   * Static factory designed to expose `error` events to event",
           "   * handlers that are not necessarily instances of [AbstractWorker].",
           "   *",
           "   * See [EventStreamProvider] for usage information.",
@@ skipping 2441 matching lines @@
           "   * ## Other resources",
           "   *",
           "   * * [Node.childNodes](https://developer.mozilla.org/en-US/docs/Web/API/Node.childNodes)",
           "   *   from MDN.",
           "   */"
         ],
         "cloneNode": [
           "/**",
           "   * Returns a copy of this node.",
           "   *",
-          "   * If [deep] is `true`, then all of this node's children and decendents are",
+          "   * If [deep] is `true`, then all of this node's children and descendents are",
           "   * copied as well. If [deep] is `false`, then only this node is copied.",
           "   *",
           "   * ## Other resources",
           "   *",
           "   * * [Node.cloneNode](https://developer.mozilla.org/en-US/docs/Web/API/Node.cloneNode)",
           "   *   from MDN.",
           "   */"
         ],
         "contains": [
           "/**",
@@ skipping 146 matching lines @@
           "   * The previous sibling node.",
           "   *",
           "   * ## Other resources",
           "   *",
           "   * * [Node.previousSibling](https://developer.mozilla.org/en-US/docs/Web/API/Node.previousSibling)",
           "   *   from MDN.",
           "   */"
         ],
         "textContent": [
           "/**",
-          "   * All text within this node and its decendents.",
+          "   * All text within this node and its descendents.",
           "   *",
           "   * ## Other resources",
           "   *",
           "   * * [Node.textContent](https://developer.mozilla.org/en-US/docs/Web/API/Node.textContent)",
           "   *   from MDN.",
           "   */"
         ]
       }
     },
     "Notification": {
@@ skipping 572 matching lines @@
           "   *",
           "   * See [EventStreamProvider] for usage information.",
           "   */"
         ],
         "send": [
           "/**",
           "   * Transmit data to the server over this connection.",
           "   *",
           "   * This method accepts data of type [Blob], [ByteBuffer], [String], or",
           "   * [TypedData]. Named variants [sendBlob], [sendByteBuffer], [sendString],",
-          "   * or [sendTypedData], in constrast, only accept data of the specified type.",
+          "   * or [sendTypedData], in contrast, only accept data of the specified type.",
           "   */"
         ]
       }
     },
     "Window": {
       "comment": [
         "/**",
         " * Top-level container for the current browser tab or window.",
         " *",
         " * In a web browser, each window has a [Window] object, but within the context",
@@ skipping 961 matching lines @@
           "   *",
           "   * By default the request is done asyncronously, with no user or password",
           "   * authentication information. If `async` is false, the request will be send",
           "   * synchronously.",
           "   *",
           "   * Calling `open` again on a currently active request is equivalent to",
           "   * calling `abort`.",
           "   *",
           "   * Note: Most simple HTTP requests can be accomplished using the [getString],",
           "   * [request], [requestCrossOrigin], or [postFormData] methods. Use of this",
-          "   * `open` method is intended only for more complext HTTP requests where",
+          "   * `open` method is intended only for more complex HTTP requests where",
           "   * finer-grained control is needed.",
           "   */"
         ],
         "overrideMimeType": [
           "/**",
           "   * Specify a particular MIME type (such as `text/xml`) desired for the",
           "   * response.",
           "   *",
           "   * This value must be set before the request has been sent. See also the list",
           "   * of [IANA Official MIME types](https://www.iana.org/assignments/media-types/media-types.xhtml)",
@@ skipping 76 matching lines @@
           "   * `text/xml` stream, unless responseType = 'document' and the request is",
           "   * synchronous.",
           "   */"
         ],
         "send": [
           "/**",
           "   * Send the request with any given `data`.",
           "   *",
           "   * Note: Most simple HTTP requests can be accomplished using the [getString],",
           "   * [request], [requestCrossOrigin], or [postFormData] methods. Use of this",
-          "   * `send` method is intended only for more complext HTTP requests where",
+          "   * `send` method is intended only for more complex HTTP requests where",
           "   * finer-grained control is needed.",
           "   *",
           "   * ## Other resources",
           "   *",
           "   * * [XMLHttpRequest.send](https://developer.mozilla.org/en-US/docs/DOM/XMLHttpRequest#send%28%29)",
           "   *   from MDN.",
           "   */"
         ],
         "setRequestHeader": [
           "/**",
@@ skipping 888 matching lines @@
           "   *",
           "   * See also:",
           "   *",
           "   * * [Database.changeVersion](http://www.w3.org/TR/webdatabase/#dom-database-changeversion) from W3C.",
           "   */"
         ]
       }
     }
   }
 }