Child Tags is an optional section that may be added to a tag in a library definition.

Child Tags是一个可以向库定义中标签添加的可选部分。

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An optional section at the end describes how to deploy the DayTrader sample application if you want to use it for testing.

在结尾处一个可选的小节描述了如果您希望将其用于测试的话，如何配置DayTrader例子应用程序。

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In addition, any complex data type that the service USES must be defined in an optional section immediately before the section.

除此之外，服务所使用的任何复杂数据类型必须在一个可选的部分里面被定义，而部分必须直接放在部分之前。

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This series adopts a discrete component configuration that separates the display section from the tuner section, and these two sections can be connected with a cable or by using an optional wireless video transmitter unit that employs AMIMON's WHDI technology.

ENGADGET: Sharp's X-Series LCD HDTVs offered with WHDI wireless link