anchor.diff:        <li><a href="#site">Site</a></li>
         <li><a href="#status-codes">(HTTP) Status codes</a></li>
         <li><a href="#subdomain">Subdomain</a></li>
  -      <li><a href="#tna">TNA</a></li>
  +      <li><a href="#tna">The National Archives (TNA)</a></li>
         <li><a href="#tna-timestamp">TNA Timestamp</a></li>
         <li><a href="#ttl">TTL</a></li>
         <li><a href="#url">URL</a></li>
  
positive.code:     </ul>
  
      <h3 id="path">Path</h3>
      <p>This is the part of a URL after the domain name. For example, in the URL https://www.gov.uk/government/organisations, the path is: /government/organisations</p>
  
      <h3 id="protocol">Protocol</h3>
      <p>This is the first part of a URL, either http or https.</p>
  
      <h3 id="query-parameters">Query parameters</h3>
      <p>A query parameter might appear in some URLs. It’s the part of a URL written to be read by a computer, for example:</p>
  
      <p>In order to reduce the number of mappings for you to write and maintain, we identify the significant query parameters in use on your site, which lets us deduplicate many URLs. A query parameter is significant if changing it means a user sees different content.</p>
  
      <h3 id="redirect">Redirect</h3>
      <p>A redirect means automatically taking a user from the old URL they requested to the new one identified in the mapping. For example http://www.bis.gov.uk redirects to https://www.gov.uk/government/organisations/department-for-business-innovation-skills
  </p>
  
      <h3 id="site">Site</h3>
  
negative.code:     <h3 id="subdomain">Subdomain</h3>
      <p>Subdomains are domain names which have a parent domain name. For example: en.wikipedia.org and www.wikipedia.org are different subdomains of their parent domain wikipedia.org.</p>
  
      <h3 id="tna">The National Archives (TNA)</h3>
      <p>The National Archives is the government organisation responsible for creating archives of UK government websites to maintain the public record in the digital age. The Transition app provides users with a link to TNA to view archived pages on transitioned sites.</p>
      <p><a href="http://webarchive.nationalarchives.gov.uk/">Web Archive homepage</a></p>
  
      <h3 id="tna-timestamp">TNA Timestamp</h3>
      <p>The National Archives Web Archive will produce snapshots (or “crawl”) of a given website, which are labelled with timestamps, for example <code>20100202072553</code> is for a snapshot taken on the 2 February 2010 at 7:25am.</p>
  
      <h3 id="ttl">Time to live (TTL)</h3>
      <p>The number of seconds for which a <a href="#dns">DNS</a> record can be cached by your computer. For example, before being checked with a DNS server. We ask for the TTL for your sites to be lowered to 5 minutes before switchover so that there is a clean cut-over — rather than different users getting the old or new site until the change has propagated. Commonly TTLs can be set to a day, which would lead to poor user experience as they would see the old or new site unpredictably.</p>
  
      <h3 id="url">URL</h3>
      <p>A URL is how a web browser requests pages, images and other data from a website.</p>
  