code	category	weight	rotate	banner
t1	tech	1	0	10% tech banner
t2	tech	2	0	20% tech banner
t3	tech	7	0	70% tech banner
tech	tech	0	0	tech banner, categorized, non-rotated
tech	tech	0	1	Tech rotated 1{or}Tech rotated 2
a1	art	1	0	10% art banner
a2	art	2	0	20% art banner
a3	art	7	0	70% art banner
default		0	1	Default 1{or}Default 2{or}Default 3
