anchor.diff:  direct printing to the commonly available JavaScript `console` object
   and print the famous message.
   
  -In order to compile this we need a simple build script. ClojureScript is 
  -just a Clojure library and can be easily scripted in a few lines of 
  -__Clojure__. Create a file called `build.clj` next to the `src` directory 
  -and the `cljs.jar` file. Note the name of this file does not matter. In 
  -this tutorial we'll always make our compiler helper scripts at the root 
  +In order to compile this we need a simple build script. ClojureScript is
  +just a Clojure library and can be easily scripted in a few lines of
  +__Clojure__. Create a file called `build.clj` next to the `src` directory
  +and the `cljs.jar` file. Note the name of this file does not matter. In
  +this tutorial we'll always make our compiler helper scripts at the root
   of the project directory.
   
   Add the following Clojure code:
  
positive.code: [[using-clojurescript-on-a-web-page]]
  == Using ClojureScript on a Web Page
  
  Create a file `index.html` at the root of the project and include the 
  following:
  
  ....
  
negative.code:         <script type="text/javascript" src="out/main.js"></script>
          <script type="text/javascript">
              goog.require("hello_world.core");
              // Note the underscore "_"!
          </script>
      </body>
  </html>
  