anchor.diff:  		<tr>
   			<td>27 April 2013</th>
   			<td>1.0</td>
  -			<td>Initial release</td>
  +			<td><%= link_to "Initial release", flight_historian_path(version: "1-0") %></td>
   		</tr>
   		<tr>
   			<td>24 October 2013</th>
   			<td>1.1</td>
  -			<td><%= link_to("Routes and Top 5 Lists", 'http://onehundredairports.com/2013/10/24/flight-log-version-1-1-routes-top-5-lists-and-more/') %></td>
  +			<td><%= link_to "Routes and Top 5 Lists", flight_historian_path(version: "1-1") %></td>
   		</tr>
   		<tr>
   			<td>27 October 2014</th>
   			<td>1.2</td>
  -			<td><%= link_to("Operators and Codeshares", 'http://onehundredairports.com/2014/10/29/flight-log-version-1-2-operators-and-codeshares') %></td>
  +			<td><%= link_to "Operators and Codeshares", flight_historian_path(version: "1-2") %></td>
   		</tr>
   		<tr>
   			<td>8 February 2015</th>
   			<td>1.3</td>
  -			<td><%= link_to("Distances and Annual Summaries", 'http://onehundredairports.com/2015/02/14/flight-log-version-1-3-distances-and-annual-summaries/') %></td>
  +			<td><%= link_to "Distances and Annual Summaries", flight_historian_path(version: "1-3") %></td>
   		</tr>
   		<tr>
   			<td>31 January 2016</th>
   			<td>2.0</td>
  -			<td><%= link_to("Flight Historian", 'http://onehundredairports.com/2016/01/31/flight-log-version-2-0-flight-historian/') %></td>
  +			<td><%= link_to "Flight Historian", flight_historian_path(version: "2-0") %></td>
   		</tr>
   		<tr>
   			<td>29 April 2017</th>
   			<td>2.1</td>
  -			<td><%= link_to("Import Flights from Digital Boarding Passes", "https://onehundredairports.com/2017/04/29/flight-log-version-2-1-import-flights-from-digital-boarding-passes/") %></td>
  +			<td><%= link_to "Import Flights from Digital Boarding Passes", flight_historian_path(version: "2-1") %></td>
   		</tr>
   	</tbody>
   </table>
   
  -<h2 id="specifications">Specifications</h2>
  +<%= link_header "Specification", 2 %>
   
  -<%= link_buttons(DownloadButton.new('files/flight-historian/Flight Historian 2.1 Specification.pdf')) %>
  +<%= link_buttons(DownloadButton.new("files/flight-historian/Flight Historian 2.1 Specification.pdf")) %>
   
  -<h2 id="credits">Credits</h2>
  +<%= link_header "Credits", 2 %>
   
   <ul>
   	<li>Thanks to <strong>Dan Bogard</strong> for reviewing the original specifications.</li>
  
positive.code:   <li>Stores and <%= link_to "parses", boarding_pass_parser_path %> boarding pass barcode data for each flight</li>
  </ul>
  
  <h2 id="tools">Tools</h2>
  
  <table class="table table-striped">
  	<tbody>
  
negative.code: <%= render partial: "static_pages/flight_historian/version_picker", locals: {menu: @version_menu} %>
  
  <%= link_buttons(
    LinkButton.new("Visit <strong>Flight Historian</strong>", "flight-historian", "https://www.flighthistorian.com/"),
    LinkButton.new("<strong>GitHub</strong> repository", "github", "https://github.com/bogardpd/flight_log")
    ) %>
  
  <p>Flight Historian is a personal flight tracking website, allowing me to map and analyze all flights I’ve taken. Flights can be viewed all together, or analyzed by airline, aircraft, airport, route, class, or tail number.</p>
  
  <%= link_header "Capabilities", 2 %>
  
  <ul>
    <li>Allows a user to keep track of every aspect of their commercial flight history</li>
  