anchor.diff:  
         <h4 class="page-header">Parameters</h4>
   
  -      <p>You must provide the <code>/track</code> endpoint with three core resources: <code>message</code>, <code>conversation</code>, and <code>interlocutor</code>.</p>
  +      <p>You must provide the <code>/track</code> endpoint with three core resources: <code>message</code>, <code>conversation</code>, and <code>creator</code>.</p>
   
         <div class="card">
  +        <div class="card-header">
  +          Message
  +        </div>
           <table class="table mb-0">
             <thead>
               <tr>
  
positive.code:           <tbody>
              <tr>
                <td>
                  <strong>message</strong>
                  <i>distinct_id</i>
                </td>
                <td>
  
negative.code:               <td>
                  <strong>string</strong> <span class="tag tag-success">Required</span>
                  <p>Either <code>interlocutor</code> or <code>bot</code>. Case insensitive.</p>
                </td>
              </tr>
              <tr>
                <td>
                  <i>username</i>,
                  <i>phone</i>,
                  <i>email</i>,
                  <i>first_name</i>,
                  <i>last_name</i>,
                  <i>gender</i>,
                  <i>locale</i>,
                  <i>profile_picture</i>,
                  <i>timezone</i>
                </td>
                <td>
                  <span class="tag tag-default">Optional</span>
                  <p>If <code>type</code> is <code>interlocutor</code>, then additional <%= link_to "interlocutor properties", "/reference/interlocutor.html#create" %> can also be set.</p>
                </td>
              </tr>
            </tbody>
  