0.0/configuring-ember/optional-features">
            <span class="link-text">
              Optional Features
            </span>
          </a>
        </li>
              <li class="toc-item toc-link selected">
          <a id="ember452676" class="ember-view active" data-test-toc-link="Build targets" href="/v4.0.0/configuring-ember/build-targets">
            <span class="link-text">
              Build targets
            </span>
          </a>
        </li>
              <li class="toc-item toc-link ">