anchor.diff:  
   == Ajax
   === $http
  -.http://localhost:3000/#/http[$http example]
   [source,javascript]
   ----
   include::{sourcedir}/src/app/http/http.controller.js[lines=6..10,indent=0]
  
positive.code: <p>{{ invoice.total | currency }}</p>
  <p>{{ invoice.date | date: 'MM/dd/yyyy' }}</p>
  <p>{{ student.score | number: 2 }}%</p>
  ----
  .JavaScript
  [source,javascript]
  
negative.code: === Directives
  [source,html]
  ----
  <div ng-repeat="tem in cart.items">
    <span ng-bind="item.name"></span>
    <button ng-click="cart.delete($index)">Delete</button>
  </div>
  <tabset>
    <tab ng-repeat="tab in tabs" heading="{{tab.title}}" >
      {{tab.content}}
    </tab>
  </tabset>
  ----
  * Implementation can get complex!
  
  