当您选择树形结构中的某个元素时，它会激活属性视图并显示所选项目的详细信息。
When you select an element in the tree view, the properties view is activated and shows the details of what you have selected.
激活的层会在视图中强调显示。
一定要注意的是，上面描述的 JSON 支持很容易激活，只需在各个视图中做更改，操作代码保持不变。
It's important to note that the JSON support described above was activated simply by making changes in the various views, with the action code remaining untouched.
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