This component is a utility that controls the visibility of views.
该组件是控制视图可见性的一个实用组件。
Scope controls the visibility and lifecycle aspects of the implementation.
范围控制实现的可见性和生命周期。
The "relevant" attribute controls the visibility of elements of the XForms form.
“relevant”属性控制X forms表单元素的可见性。
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