anchor.diff:  block neck
   
   block feet
  -  script(src='/elements/build/bundle.js?#{cacheBreaker}')
  +  script(src='/views/build/index.js?#{cacheBreaker}')
   
   block body
   
  
positive.code:       .row
          .col-md-6.col-md-offset-3.text-center
            h2(style='margin-bottom: 30px;') Spot
            p A photo background square box that display a heading.
            pre
              | /* How to composite a Spot element. */
              | 
              | // Step 1: Require partjs elements.
              | var Elements = require('elements');
              | 
              | // Step 2: Create an element instance and bind data.
              | this.widget = new Elements.Spot({
  
negative.code:     .container(style='margin-top: 30px; margin-bottom: 80px;')
        .row
          .col-md-8.col-md-offset-2.text-center
            h2(style='margin-bottom: 50px;') Next Generation WoT and SPA Framework
            h3(style='margin-left: 15%; margin-bottom: 30px; font-weight: 300; line-height: 40px; text-align: left;') 
              span(style='font-weight: 300;') var Elements = require('partjs-elements');
              br
              | var component = new Elements.Spot( ... );
              br
              | component.add( ... );
              br
              | component.add( ... );
  
    section
      .container(style='width: 80%;')
  