In the following figure we're about to delete an element (the one we right-clicked on) from the model entirely, not merely from a diagram where it's depicted.
在下图中，我们打算从模型中彻底删除一个元素(我们右键单击的元素)，不只是在描述该元素的图中。
2
If a certain entry is clicked, present its contents at the right.
如果某个条目被单击，就在右侧展示其内容。
3
To get specific behavior depending on which node is right-clicked, you could connect to the _openmyself method of the menu as shown in Listing 35.