The main contribution of these tools is that GUI dialogs, tree views, and tabs replace command-line switches; but the basic file structure is the same.
这些工具最大的贡献是用 GUI 对话框、树视图和选项卡代替了命令行开关参数，但其基本的文件结构还是一样的。
And then discusses the difficult problem in the design of software: the data structure of the tree after analyzing and designing the basic data demanded by the system.
并对系统所需的基础数据进行了分析与设计，对软件设计中的难点问题——树的数据结构进行了探讨。
The main contribution of these tools is that GUI dialogs, tree views, and tabs replace command-line switches, but the basic file structure is still the same.
这些工具最大的贡献是用GUI对话框、树视图和选项卡代替了命令行开关参数，但其基本的文件结构还是一样的。
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