The tree navigator, as the name suggests, allows applications to select nodes from the tree by navigating through the hierarchy.
树浏览器正如其名，允许应用程序通过浏览层次结构来从树中选择节点。
From the J2EE Hierarchy view, in the J2EE Perspective, select the session bean LookupWithReference.
在J2EE透视图中，从J2EE层次视图中选择会话bean LookupWithReference。
Move an element a level down in the hierarchy: Select the element to become the child element and click Tab.
将一个元素在层级中向下移动一级：选择将成为子元素的元素并单击Tab。
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