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。

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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。

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Use extension points and create the category.

使用扩展点并创建类别。

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In a recent report, Wells Fargo tech analyst Jason Maynard zeroed in on syndicated commerce as an emerging software-as-a-service category extension to ecommerce solutions.

FORBES: The Local Deals Market Version 2.0: Syndicated Commerce