The first extension is the newly created action set, which defines the menu, toolbar path, tool tip, icon, and the actions to call when it is selected.

第一个扩展是新建的操作集，它定义了菜单、工具栏路径、工具提示、图标以及被选中后希望调用的操作。

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Today, Carr writes, computing is following that same path from tool to utility.

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