I took your suggestion and it worked exactly as I had hoped. Thankyou. GHCI (6.8.2) was though a little concerned, and told me I had an: Illegal instance declaration for `ZOT [x] [y]' and recommended I use -fallow-undecidable-instances. I did, and it worked. What have I done though? The word "undecidable" scares me a little :)
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