The IUTIL trace flags are set by the other trace flags. That is,
if you do -P20, when ever the parser enters acc_err you will get
the appropriate trace message.

acc_err		--	20
acc_init	--	20
add_ovflo	--	26
addbatch	--	25
canonical	--	27
choose_buf	--	29
colser		--	21
delete		--	24
find		--	22
findbest	--	27
flush_rel	--	20
flushbatch	--	25
get		--	23
get_attr	--	21
get_page	--	26
get_page	--	76
get_reltup	--	21
getequal	--	23
inpcloser	--	21
insert		--	24
last_page	--	26
noclose		--	21
openbatch	--	25
openr		--	21
openr		--	76
pageflush	--	29
pageflush	--	76
put_tuple	--	27
relntrrd	--	13
replace		--	24
resetacc	--	20
retrll		--	28
rhash		--	19
set_up_lock	--	28
setcsl		--	28
setdbl		--	28
setkey		--	22
setpgl		--	28
tup_len		--	27
uncls		--	28
unlall		--	28
unldb		--	28
unlpg		--	28
unlrl		--	28
wrbatch		--	25

13	--	relntrrd
19	--	rhash
20	--	acc_err
20	--	acc_init
20	--	flush_rel
20	--	resetacc
21	--	colser
21	--	get_attr
21	--	get_reltup
21	--	inpcloser
21	--	noclose
21	--	openr
22	--	find
22	--	setkey
23	--	get
23	--	getequal
24	--	delete
24	--	insert
24	--	replace
25	--	addbatch
25	--	flushbatch
25	--	openbatch
25	--	wrbatch
26	--	add_ovflo
26	--	get_page
26	--	last_page
27	--	canonical
27	--	findbest
27	--	put_tuple
27	--	tup_len
28	--	retrll
28	--	set_up_lock
28	--	setcsl
28	--	setdbl
28	--	setpgl
28	--	uncls
28	--	unlall
28	--	unldb
28	--	unlpg
28	--	unlrl
29	--	choose_buf
29	--	pageflush
76	--	get_page
76	--	openr
76	--	pageflush