anchor.diff:      </tr>
   
       <tr>
  +      <th><code>shell</code></th>
  +      <td>
  +        The shell command used to interpret build commands, e.g <code>/bin/bash -e -c</code>
  +        <p class="Docs__api-param-eg"><em>Default:</em> <code>"C:\Windows\System32\CMD.exe"</code> on Windows, <code>"/bin/bash"</code> on *nix systems</p>
  +        <p class="Docs__api-param-eg"><em>Environment variable:</em> <code>BUILDKITE_SHELL</code></p>
  +      </td>
  +    </tr>
  +
  +    <tr>
         <th><code>tags</code></th>
         <td>
           Tags for the agent
  
positive.code: <table>
    <tbody>
      <tr>
        <th><code>token</code></th>
        <td>
          The agent registration token from your organization’s Agents page, used only to register new agents
          <p class="Docs__api-param-eg"><em>Environment variable:</em> <code>BUILDKITE_AGENT_TOKEN</code></p>
        </td>
      </tr>
  
  
negative.code:     </tr>
  
      <tr>
        <th><code>timestamp-lines</code></th>
        <td>
          Prepend timestamps on each line of output
  