一个Submap就是指一个常规的映射文件，您可以使用submap转换从其他映射文件中调用。

A Submap is nothing more than a regular map file that you can call from other map files using the Submap transform.

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Helper文件里面什么也没有：你可以在里面放入自己写的Ruby方法，并可以从视图模板中调用这些方法。

The helper file is empty: it's a place where you can put Ruby methods that you write and that you want to call from your view templates.

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对于每个从共享内存或初次调用使用的配置文件中读取的日志标记，OPEN_LOG都会使用标记名和散列表的大小来生成一个散列值。

For each logging token read from the Shared memory or configuration file on its first invocation, OPEN_LOG builds a hash key using the name of the token and the size of the hash table.

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