anchor.diff:  head
     title Leaderboard
  +  meta(name='viewport', content='width=device-width, user-scalable=no')
   
   body
  -  #outer
  +  .outer
       +leaderboard
   
  -template(name="leaderboard")
  +template(name='leaderboard')
     .leaderboard
       each players
         +player
  
positive.code:   if selected_name
      .details
        .name= selected_name
        input.inc(type="button" value="Give 5 points")
    else
      .none Click a player to select
  
  template(name="player")
    .player(class=selected)
      span.name=  name
      span.score= score
  
  //-
    <head>
      <title>Leaderboard</title>
    </head>
  
    <body>
      <div id="outer">
        {{> leaderboard}}
      </div>
    </body>
  
negative.code:     </div>
  
      {{#if selected_name}}
        <div class="details">
          <div class="name">{{selected_name}}</div>
          <button class="inc">Give 5 points</button>
        </div>
      {{else}}
        <div class="none">Click a player to select</div>
      {{/if}}
    </template>
  
  