.TH EXCEPTION 2.SH NAMEexception \- Exception module.SH SYNOPSIS.EXinclude "exception.m";exc := load Exception Exception->PATH; getexc:	fn(pid: int): (int, string, string);setexcnotifyleader:	fn(pid: int): int;setexcpropagate:	fn(pid: int): int;.EE.SH DESCRIPTION.B Exceptionprovides exception-related utility routines to read or write to systemdevice files..PP.B Getexcreturns the last exception to be raised on the process with the given processid. A process id of -1 is taken to mean the current process. The returnedtriple gives the pc value, the module and the exception name or 0, nil, nilif no exception has occurred..PP.B Setexcnotifyleaderand.B setexcpropagateset 'exceptions notifyleader' and 'exceptions propagate' respectively on the givenprocess. 0 is returned on success,-1 on failure (for instance if the process is not a group leader or does not exist).See.I prog (3)for the actual meaning of these settings..SH SOURCE.B /appl/lib/exception.b.SH SEE ALSO.IR prog (3)