System 5.3.1 signal() replacement?

[Timothy Reed]

I don't have access to a 5.3.1 system, but I understand that signal()
has been replaced by a new set of signal handlers.  Could someone kindly
mail me a man page (I think that the replacement is sigset()?) or 
a brief summary of snytax and usage (and signals!) - doing so will
make my life much easier!!!

Thanks!

Timothy Reed

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