| On | Data.Singletons.Prelude.Function |
| OnSym0 | Data.Singletons.Prelude.Function |
| OnSym1 | Data.Singletons.Prelude.Function |
| OnSym2 | Data.Singletons.Prelude.Function |
| OnSym3 | Data.Singletons.Prelude.Function |
| OnSym4 | Data.Singletons.Prelude.Function |
| Optional | Data.Singletons.Prelude.Applicative |
| OptionalSym0 | Data.Singletons.Prelude.Applicative |
| OptionalSym1 | Data.Singletons.Prelude.Applicative |
| Options | Data.Singletons.TH.Options |
| OptionsM | Data.Singletons.TH.Options |
| OptionsMonad | Data.Singletons.TH.Options |
| OptionSym0 | Data.Singletons.Prelude.Semigroup |
| OptionSym1 | Data.Singletons.Prelude.Semigroup |
| Option_ | Data.Singletons.Prelude.Semigroup |
| option_ | Data.Singletons.Prelude.Semigroup |
| Or | Data.Singletons.Prelude.Foldable, Data.Singletons.Prelude.List, Data.Singletons.Prelude |
| OrSym0 | Data.Singletons.Prelude.Foldable, Data.Singletons.Prelude.List, Data.Singletons.Prelude |
| OrSym1 | Data.Singletons.Prelude.Foldable, Data.Singletons.Prelude.List, Data.Singletons.Prelude |
| Otherwise | Data.Singletons.Prelude.Bool, Data.Singletons.Prelude.Base, Data.Singletons.Prelude, Data.Singletons.CustomStar |
| OtherwiseSym0 | Data.Singletons.Prelude.Bool, Data.Singletons.Prelude.Base, Data.Singletons.Prelude, Data.Singletons.CustomStar |