配置记录处理程序，比如记录创建和处理程序合并，返回一个指向新结构或NULL。

Config record handlers, like the record creation and merge handlers, return either a pointer to the new structure or NULL.

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除了Erlang shell中的错误以外，其他进程中的错误将由错误记录程序处理和记录，这是一个处理错误报告的内置进程。

Errors in processes beyond those in the Erlang shell are handled and recorded by the error logger, a built-in process that handles the error reporting.

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处理程序可以处理加密和解密、日志记录和审计等。

Handlers can manage encryption and decryption, logging and auditing, and so on.

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