          <%= htmlFor('loops') %>
        </section>
        <section id="slices">
          <%= htmlFor('slices') %>
        </section>
        <section id="expressions">
          <%= htmlFor('expressions') %>
        </section>
        <section id="operators">
          <%= htmlFor('operators') %>
        </section>
        <section id="existential-operator">
          <%= htmlFor('existential_operator') %>
        </section>
        <section id="chaining">
          <%= htmlFor('chaining') %>
        </