本系统是为与文字处理软件配合使用而设计的。
The system is designed to be used in conjunction with a word processing program.
与良好的文字说明相比，如果用例没有被良好的设计，对于你来说他们当然没有用的。
If use cases are poorly designed, they'll certainly be of less use to you than well-written textual specifications.
低精度界面原型，也叫线框图，被有意设计成只包含黑白的图形与文字。
Low fidelity mockups, often called wireframes, are intentionally basic, often consisting of just black and white shapes and text.
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