anchor.diff:    <div class="site-content-body">
       <div class="markdown-body">
         <p> Next, let's set up a "roster", so you can easily track student progress on your dashboard.
  -      <p> To create your roster, you'll need to paste in unqiue identifiers, one per line. These identifiers can be:</p>
  +      <p> To create your roster, you'll need to share a way to identify your students. These "identifiers" can be:</p>
   
         <ul>
           <li>Student last names</li>
  
positive.code:           <%= render('shared/form_error', errors: view.error_message_for(:identifiers)) if view.errors_for?(:identifiers) %>
          </dl>
  
          <dl class="<%= view.form_class_for(:identifier_name) %> short-field">
            <dt><label>Give this batch of identifiers a name (in case you'd like to re-use it):</label></dt>
            <dd><%= text_field_tag(:identifier_name, '', class: 'form-control input-block') %></dd>
            <%= render('shared/form_error', errors: view.error_message_for(:identifier_name)) if view.errors_for?(:identifier_name) %>
          </dl>
  
          <div class="form-actions">
            <%= submit_tag 'Create', class: 'btn btn-primary right' %>
  
negative.code:         <li>Any other unique piece of information</li>
        </ul>
  
  <p>You can always come back and complete this step later.</p>
  
        <dl class="<%= view.form_class_for(:identifier_name) %> short-field">
          <dt><label>What information would you like to use to identify your students? (emails, student ID #, etc.)</label></dt>
          <dd><%= text_field_tag(:identifier_name, '', class: 'form-control input-block') %></dd>
          <%= render('shared/form_error', errors: view.error_message_for(:identifier_name)) if view.errors_for?(:identifier_name) %>
        </dl>
  
      </div>
      </br>
      <div>
  