If you click the "Show bound instance elements" button in the toolbar, the number one appears in parentheses beside the node, meaning that this node is bound to one item on the canvas.

如果单击工具栏中的“Show bound instance elements”按钮，则节点旁边的括号内出现数字1，这表示该节点已绑定到工作区上的一个项目。

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