Index - O
| odd | Cornea.Prelude |
| on | Cornea.Prelude |
| OnDecodeError | Cornea.Prelude |
| One | Cornea.Prelude |
| one | Cornea.Prelude |
| OneItem | Cornea.Prelude, Cornea.Prelude |
| OnError | Cornea.Prelude |
| Op | |
| 1 (Type/Class) | Cornea.Prelude |
| 2 (Data Constructor) | Cornea.Prelude |
| Option | |
| 1 (Data Constructor) | Cornea.Prelude |
| 2 (Type/Class) | Cornea.Prelude |
| optional | Cornea.Prelude |
| or | Cornea.Prelude |
| Ord | Cornea.Prelude |
| ord | Cornea.Prelude |
| Ordering | Cornea.Prelude |
| ordNub | Cornea.Prelude |
| ordNubOn | Cornea.Prelude |
| orM | Cornea.Prelude |
| otherwise | Cornea.Prelude |