anchor.diff:      <td>The label/name of the current job. <p class="Docs__api-param-eg"><em>Example:</em> <code>"\:hammer\: Specs"</code></p></td>
     </tr>
     <tr>
  +    <th><code>BUILDKITE_LOCAL_HOOKS_ENABLED</code></th>
  +    <td>A boolean to try and find local hooks for use instead of global hooks. <p class="Docs__api-param-eg"><em>Example:</em> <code>""</code></p></td>
  +  </tr>
  +  <tr>
       <th><code>BUILDKITE_MESSAGE</code></th>
       <td>The message associated with the build, usually the commit message. <p class="Docs__api-param-eg"><em>Example:</em> <code>"Added a great new feature"</code></p></td>
     </tr>
  
positive.code:     <th><code>BUILDKITE</code></th>
      <td>Always <code>"true"</code>.</td>
    </tr>
    <tr>
      <th><code>BUILDKITE_AGENT_NAME</code></th>
      <td>Name of the agent running the job. <p class="Docs__api-param-eg"><em>Example:</em> <code>"my-agent-1"</code></p></td>
    </tr>
    <tr>
      <th><code>BUILDKITE_ARTIFACT_PATHS</code></th>
      <td>The <a href="/docs/builds/artifacts">artifact paths</a> to upload after the job, if any have been specified. <p class="Docs__api-param-eg"><em>Example:</em> <code>"tmp/capybara/**/*;coverage/**/*"</code></p></td>
    </tr>
    <tr>
      <th><code>BUILDKITE_BRANCH</code></th>
      <td>The branch being built. <p class="Docs__api-param-eg"><em>Example:</em> <code>"master"</code></p></td>
    </tr>
    <tr>
      <th><code>BUILDKITE_BUILD_CHECKOUT_PATH</code></th>
      <td>The path where the agent has checked out your code for this build. <p class="Docs__api-param-eg"><em>Example:</em> <code>"/var/lib/buildkite-agent/builds/agent-1/pipeline-2"</code></p></td>
    </tr>
  
negative.code:     <td>The UUID of the build that <a href="/docs/pipelines/trigger-step">triggered</a> this build. <p class="Docs__api-param-eg"><em>Example:</em> <code>"5aa7c894-c8c0-435b-bc17-13923b90f163"</code>, or <code>""</code> if the build was not triggered from another build.</td>
    </tr>
    <tr>
      <th><code>BUILDKITE_TRIGGERED_FROM_BUILD_NUMBER</code></th>
      <td>The number of the build that <a href="/docs/pipelines/trigger-step">triggered</a> this build. <p class="Docs__api-param-eg"><em>Example:</em> <code>"1264"</code>, or <code>""</code> if the build was not triggered from another build.</td>
    </tr>
    <tr>
      <th><code>BUILDKITE_TRIGGERED_FROM_BUILD_PIPELINE_SLUG</code></th>
      <td>The slug of the pipeline that was used to <a href="/docs/pipelines/trigger-step">trigger</a> this build. <p class="Docs__api-param-eg"><em>Example:</em> <code>"build-and-test"</code>, or <code>""</code> if the build was not triggered from another build.</td>
    </tr>
    <tr>
      <th><code>BUILDKITE_UNBLOCKER</code></th>
      <td>The name of the user who unblocked the build. <p class="Docs__api-param-eg"><em>Example:</em> <code>"Tracy Tester"</code></p></td>
    </tr>
  