MSC: int raise( int sig )

	- prototype in signal.h

	- raises signal to program where 'sig' is:

		SIGABRT	signal abnormal termination
		SIGILL	signal illegal instruction
		SIGSEGV	signal illegal storage access
		SIGFPE	signal floating point error
		SIGINT	signal Ctrl-Break interrupt
		SIGTERM	signal program termination (ignored in MS DOS)
		SIGUSR1	user signal
		SIGUSR2	user signal
		SIGUSR3	user signal

	- returns 0 on success; nonzero otherwise

	- see	signal()