#define USER_HIT_CTRL_C	(SetSignal(0L, SIGBREAKF_CTRL_C) & SIGBREAKF_CTRL_C)
#define QUIT		0x80
#define FREEMEM		0x40
#define CLOSEFP		0x20
#define FREECI		0x10
#define FREEFIB		0x08

#define FILE		0x80
#define PIPE		0x40

#define MIN(a, b)	((a)<(b)?(a):(b))
#define fail(a)		fprintf(stderr, "%s: Failure: %s: %s\n", myname, fn, (a))
#define info(a)		fprintf(stderr, "%s: Info: %s: %s\n", myname, fn, (a))
#define shift		ac--; av++