The containers Haddock documentation currently represents sequences, sets, and maps via the relevant `fromList` function. For example, Data.Map gives the example findWithDefault 'x' 1 (fromList [(5,'a'), (3,'b')]) == 'x' I find these `fromList` calls exceedingly distracting, and I think they obscure the key ideas. Of course, I *could* just specify at the top that the documentation assumes OverloadedLists, but I think that's likely to be somewhat confusing, especially to beginners. My preference would really be to represent these data structures using funny brackets of some sort. Perhaps ⟦7,34,12⟧ for a sequence, ⦃40,3⦄ for a set, and ⟪(12,"alpha"), (14,"bravo")⟫ for a map. But there are three problems: 1. How can I insert the brackets conveniently? I definitely don't want to fill the module with Unicode. My preference would be to use \{ and \} or \[ and \] and have them get replaced by the left and right brackets appropriate to the module in question. But I don't actually know how to do that. 2. Funny brackets could presumably cause trouble for people who don't have appropriate fonts available. How could I mitigate this? 3. This whole idea could cause trouble for people who want to copy and paste examples from the documentation. Are people likely to want to do that? If so, how might I mitigate that problem? Are there tricks I can play to make copy/paste turn a funny left bracket into `fromList [` and a funny right bracket into `]`, and also not break things for non-HTML backends? Thanks, David