I've noticed this has had one other review of one star and after what i admit is a quick skim through this i believe it may be a little unfair so I would like to redress the balance a little (i can't say if 3 stars is right or wrong, but 1 feel 1 star is wrong ... it nearly put me off looking at this). While the start setup seems to be slow and basic the latter part pulls in chains and rules and shows how they link together. This is of is my opinion only.

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