工具栏提供了主要功能的快捷图标。

A toolbar provides icon shortcuts to major functions.

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一个便利的特性就是不同透视图的快捷方式工具栏，它显示在屏幕的左端；这些特性随上下文和历史的不同而有显著差别。

One convenient feature is a toolbar of shortcuts to different perspectives that appears on the left side of the screen; these vary dynamically according to context and history.

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一般而言，菜单、工具栏和快捷键必须指向应用程序开发人员在编译时已经预期到的动作。

Generally, menus, toolbars, and shortcuts must refer to actions that the application developer has already contemplated at compile time.

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