Bitfields for .PIF/.DVP program flags 1:
Bit(s)	Description	)
 7	writes text directly to screen
 6	runs in foreground only (see also #00427 offset 184h)
 5	uses math coprocessor
 4	accesses system keyboard buffer directly
 3-1	reserved (0)
 0	swappable
SeeAlso: #00427,#00429,#00430