Therefore, even in the best, most simplified graphical environments, it is still utterly necessary to have a full understanding of the tool being used and its semantics.

因此，即使在最好、最简单的图形环境中，全面理解正在使用的工具及其语法也是非常必要的。

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Most graphical environments today include a file manager program to view and manipulate the contents of the file system. Often you will see the file system represented like this.

现今，大部分图形化工作环境，包含了一个可以显示和操作文件系统内容的文件管理软件。

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The HC1 can be used in harsh environments and most remote locations, where access to complex graphical data or text is needed and using a laptop or handheld device is impractical without obstructing vision.

ENGADGET: Motorola Solutions outs HC1 head-mounted computer, keeps workers' hands free in sticky situations (update: video)