Back on the main Workspace window, select Bindings from the drop-down box of rules and click the + icon to add a binding rule.
回到主workspace窗口，从规则的下拉框中选择Bindings，然后单击+图标以添加绑定规则。
The resulting Project Explorer looks the same, but a small icon on the log4j .jar file indicates that the resource is linked to a physical file outside the workspace.
结果 Project Explorer 看起来是一样的，但是 log4j .jar 文件上一个小小的图标表明这个资源是工作空间以外的链接到一个物理层的资源。
She is careful not to reject the change (by pressing the icon with the blue x decorator) because she knows that doing so will cause her workspace changes to be deleted.
她小心翼翼地确保不拒绝该更改（通过按下带蓝色 x 修饰器的图标），因为这样做会导致工作空间更改被删除。
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