Roseville , MN : Unisys Corporation .
^ Jump up to : Executive Control Language ( ECL ) and FURPUR Reference Manual ( Unisys publication 7830 7949 ) ( PDF ) .
Roseville , MN : Unisys   .
^ Jump up to : Executive Control Language ( ECL ) and FURPUR Reference Manual ( Unisys publication 7830 7949 ) ( PDF ) .