You are able to add a subscription because the portlet connects to the existing sample trigger handler.

您也可以添加订阅行为，因为已连接到已有的样例触发器处理程序。

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Then, you learned how to add a subscription feature so we can notify our users by email when new documents are added to the document category to which they are subscribed.

然后，学习了如何添加订阅特性，这样当用户订阅的文档类别中添加了新文档时，我们就可以通过电子邮件通知他们。

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Eventually the company could add a subscription model as well as paid services for music companies or bands to use Cull as a promotional channel.

FORBES: Cull.tv Brings A Social Take To Music Videos

And it is betting that it can create so much real value for designers by doing so that they, and the organizations that employ them, will gladly add a subscription to Creative Cloud to the cost of doing business.

FORBES: Adobe's Creative Cloud And The Expansive Future Of The Digital Workplace

RealNetworks and other subscription companies are expected to add a similar portability option in the coming months.

ENGADGET: The Pipeline: Mossberg on Napster to Go, Dvorak on the blogosphere