ntrol" value="{{selection}}">
          <option value="single">Single</option>
          <option value="multiple">Multiple</option>
        </select>
      </div>
      <div class="checkbox">
        <label>
          <input type="checkbox" checked="{{animating}}"> Animate
        </label>
      </div>
    </form>
    
    <h-tree root="{{root}}" selection="{{selection}}" animating="{{animating}}"
            on-expanded="{{onItemExpanded}}" on-collapsed="{{onItemCollapsed}}"
            on-selected="{{onIt