Exception: module{ 	PATH:	con "/dis/lib/exception.dis"; 	# returns the last exception in the form pc, module, exception	# on the process with the given pid (-1 gives current process)	# returns (0, nil, nil) if no exception	getexc:	fn(pid: int): (int, string, string); 	NOTIFYLEADER, PROPAGATE: con iota; 	# set the exception mode(NOTIFYLEADER or PROPAGATE)	# on the current process	# it is assumed that the process is a group leader (see Sys->NEWPGRP)	# returns -1 on failure, 0 on success	setexcmode:	fn(mode: int): int; };