The.net Framework implements two types of components: visual and nonvisual.
NET Framework实现两个类型的组件：可视组件和非可视组件。
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Widgets can be both visual (in that they render visual content, such as a chart) or nonvisual (in that they provide some form of discrete function or access to a service).
小部件可以为可视的(呈现可视内容，如图标)或非可视的(提供某种形式的功能或对服务的访问)。
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A new breed of designers, the information architects, built a discipline and practice to address the nonvisual design problems of logical structure and flow of content.