Any required or optional service data inputs and outputs.
任何被要求或者可选的服务数据输入和输出。
Both -wsdl and -keep are optional, but they are utilized here to illustrate the outputs of the wsgen utility.
—wsdl和—keep这两个参数都是可选的，但此处利用这两个参数来演示wsgen实用工具的输出。
Additional features include picture-in-picture, video loss detection, optional utp video outputs, and pole and wall mounting options.
附加功能包括画中画，视频丢失侦测，可选utp视频输出以及电杆和墙壁安装选项。
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