在之前的小节中，需要左键单击节点来将所选中的节点存储在一个变量内，以便当从右键单击上下文菜单中选中一个选项时使用。

In the previous section, it was required to left click on the node to store the selected node in a variable that could be used when an option from the right-click context menu was chosen.

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注意：本例假设用户使用鼠标的左键选择感兴趣的节点。

Note: This example assumes that the user selects the node of interest using their left mouse button.

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您也可以重命名新的端口类型，通过使用鼠标左键选择条目并且输入新名称来实现。

You can also rename new port types by selecting the entry with the left mouse button and then typing its new name.

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