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/*
* This file is only used for doxygen document generation.
*/
/**
* @addtogroup group_thread_comm
* @{
*/
/**
* @defgroup group_signal Signal
* @brief signal is used for thread kill etc.
*
* A signal (also known as a soft interrupt signal), from a software perspective,
* is a simulation of interrupt mechanism. When it comes to its principle,
* thread receiving a signal is similar to processor receiving an interrupt request.
*/
/**@}*/
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