Hi Cafe, When instantiating a type class with type family, I see that haddock shows the data constructor for the type family as visible. This is what I would like to avoid. I would like to hide the details of the data constructor in the documentation. An example is stated below: -- | An implementation of the 'FCFS' queue strategy. instance QueueStrategy BrIO FCFS where -- | A queue used by the 'FCFS' strategy. newtype StrategyQueue BrIO FCFS a = FCFSQueue (LL.DoubleLinkedList BrIO a) newStrategyQueue s = fmap FCFSQueue LL.newList strategyQueueNull (FCFSQueue q) = LL.listNull q Here the FCFSQueue data constructor is visible together with all its contents in the documentation! I would like it would be hidden completely. At least, I would like to hide the contents. Is it possible to do? Thanks, David