the execution of the current (calling) thread. Note that there's no way for one thread to kill another thread other than by sending some kind of message to the soon-to-be-terminated thread instructing it to kill itself.</font></td></tr>

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<td><font face="Helvetica"><b>Note:</b></font>&nbsp; <font face="Times">In the user-level implementation, the main C thread (the first thread in the task) doesn't exit until all other 