d="cameraButton" />

                <label for="cameraList">Available cameras:</label>
                <ul id="cameraList">
                    <li>(choose cameras.json to load)</li>
                </ul>
            </div>

            <div id="instructions">
                <p><strong>Usage:</strong></p>
                <ol>
                    <li><strong>Pick a point cloud</strong> (by default called point_cloud.ply, not input.ply).</li>
                    <li>(Optional) <strong>Select a cameras.json 