anchor.diff:    </h4>
     <ol>
       <li>
  -      <h5><a name="lists1">What is a life list?</a></h5>
  -      <p>A life list is a list of every species that you have seen. Every iNaturalist user has a life list and these lists are automatically populated from the observations added to iNaturalist.</p>
  +      <h5><a name="lists1">What are lists?</a></h5>
  +      
  +      <p>
  +        Lists are simply lists of taxa (not observations). For example, you
  +        could make a list called "My Favorite Turtles" and add all your favorite
  +        turtles.  There are a number of different kinds of lists, and they behave in different ways.
  +      </p>
  +      
  +      <dl>
  +        <dt>List</dt>
  +        <dd><p>Just a simple list of taxa with no special behavior.</p></dd>
  +        
  +        <dt>Life List</dt>
  +        <dd>
  +          <p>
  +            Automatically updates based on your observations. Everyone on iNat
  +            has a default life list that contains every species that person has
  +            observed. If you delete an observation or change your ID, the
  +            species will get removed. You can also manually add taxa to your
  +            life list just like you can with an ordinary list. The species you
  +            add manually won't get removed if you observe them and then delete
  +            the observation.
  +          </p>
  +          <p>
  +            You can also make additional life lists for specific groups of
  +            organisms, like a life list of birds, or a life list of milkweeds.
  +          </p>
  +        </dd>
  +        
  +        <dt>Project List</dt>
  +        <dd>
  +          <p>
  +            A project list belongs to a project and lists all the taxa
  +            observed by members of that project. Project lists can also be
  +            populated manually by the admin of that project, and can be used
  +            to restrict project contributions to taxa that are on the list.
  +          </p>
  +        </dd>
  +        
  +        <dt>Check List</dt>
  +        <dd>
  +          <p>
  +            A check list is a list of taxa that occur in a place. Every place
  +            has a default check list, and whenever an observation is made
  +            within the place's boundaries <em>and</em> it has achieved
  +            research-grade status, the species observed will get automatically
  +            added to the place's check list.
  +          </p>
  +          
  +          <p>
  +            iNat users can also add additional check lists to places, but
  +            these check lists are not automatically updated. They mainly
  +            provide a way for people to bring in outside sources of data or
  +            just list things based on their own experience.
  +          </p>
  +        </dd>
  +      </dl>
       </li>
       <li>
         <h5><a name="lists2">I observed a species, why isn't it showing up in my life list?</a></h5>
  
positive.code:       Lists
      </h4>
      <ol>
        <li><a href="#lists1">What is a life list?</a></li>
        <li><a href="#lists2">I observed a species, why isn't it showing up in my life list?</a></li>
      </ol>
    </div>
  
negative.code:         controls how the spatial coordinates (latitude and longitude) are 
          displayed. Here are the options:
        </p>
        <dl>
          <% for privacy, description in Observation::GEOPRIVACY_DESCRIPTIONS %>
            <dt><%= privacy || "open" %></dt>
            <dd><p><%= description %></p></dd>
          <% end %>
        </dl>
        <p>
  