Hallo! The module Array exports module Ix (Haskell 98 Library Report). The mod= ule=20 IArray doesn't export Ix (jet?). I think a pack and unpack function to convert between IArray ix be and = UArray=20 ix ube via 'amap pack/unpack' would be useful. (Or am I just missing the conversion function and it i= s=20 already there? Andreas=