anchor.diff:      <!-- (1) force latest IE rendering engine: bit.ly/1c8EiC9 -->
       <meta http-equiv="X-UA-Compatible" content="IE=edge">
   
  -    <title><%= ENV['SITE_TITLE'] %></title>
  -    <meta name="description" content="<%= ENV['SITE_DESCRIPTION'] %>" />
  +    <% title = page_title(current_page) %>
  +    <% description = page_description(current_page) %>
  +    <% image = page_image(current_page) %>
  +
  +    <title><%= title %></title>
  +    <meta name="description" content="<%= description %>" />
   
       <meta name="HandheldFriendly" content="True" />
       <meta name="MobileOptimized" content="320" />
  
positive.code:     <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
  
      <!-- DublinCore Metadata -->
      <meta property="dc:title" content="<%= page_title(current_page) %>" />
      <meta property="dc:format" content="text/html" />
      <meta property="dc:language" content="en" />
      <meta property="dc:rights" content="CC-BY" />
  
negative.code:     <% if ENV['TWITTER_HANDLE'] %>
      <meta name="twitter:card" content="summary" />
      <meta name="twitter:site" content="<%= ENV['TWITTER_HANDLE'] %>" />
      <meta name="twitter:title" content="<%= title %>" />
      <meta name="twitter:image" content="<%= image %>" />
      <meta name="twitter:description" content="<%= description %>" />
      <% end %>
  
      <meta property="og:site_name" content="<%= title %>" />
      <meta property="og:description" content="<%= description %>" />
      <meta property="og:image" content="<%= image %>" />
      <meta property="og:type" content="blog" />
  
      <link href="//fonts.googleapis.com/css?family=Libre+Baskerville:400,400i,700" rel="stylesheet">
  