每个端点的所有者决定端点url提供多少可选信息。

The owner of each end point decides how much optional information to provide with the endpoint URL.

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您还可以发送一个可选信息给对方，告诉对方您已在线了。

You also send an optional message to the peer to indicate that you're available.

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函数或过程名可能包含可选信息，如模块名、行号、字节偏移量以及参数的名称、类型和值。

The function or procedure name may be accompanied by optional information, such as module name, line number, byte offset, and parameter names, types, and values.

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