rc="/ch9.html">
            </iframe>
          </section>



          <!-- Adding Pedestrians -->
          <section>
            <h1>Adding Pedestrians</h1>
          </section>
          <section>
            <img src="/images/ped.gif"/>
            <small style="display: block;">
              <a target="_blank" href="https://opengameart.org/content/animated-top-down-zombie">source</a>
            </small>
          </section>
          <section>
            <h2>A* Algorithm</h2>
            <img src="