You can use programming idioms (such as inheritance) and customization hooks (such as Visual Basic scripts) to write new code extending the application.
可以用编程方案(例如继承)和定制挂钩(例如Visual basic脚本)编写扩展应用程序的新代码。
The idioms described in the previous section are all examples of rich visual modeless feedback, which we will discuss in detail in Chapter 25.
前面一节描述的习惯用法全部是丰富的非模态视觉反馈的例子，我们将在第25章中做详细讨论。
Unfortunately, many attempts at direct-manipulation idioms are implemented without adequate visual feedback, and these interactions fail to effectively create an experience of direct manipulation.
不幸的是，很多直接操作的习惯用法都没有充足的视觉反馈，这些交互无法有效地创造出直接操作的体验。
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