You should recognize the first part of the rule extension, because it is almost identical to the category extension previously shown.
您应当识别出规则扩展的第一个部分，这是由于它几乎等同于前面所显示的类别扩展。
Add a new extension to the plug-in as we did for the category.
向插件程序中添加一个新的扩展，就如同我们在类别时所做的那样。
Use extension points and create the category.
使用扩展点并创建类别。
This extension has additional addons listed in an extension specific category.
这个扩展有一些附加的插件，列在一个特别的分类里。
This extension has additional addons listed in an extension specific category.
这个扩展有一些附加的插件，列在一个特别的分类里。
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