Index - O
| odd | CorePrelude, BasicPrelude |
| on | CorePrelude, BasicPrelude |
| onException | CorePrelude, BasicPrelude |
| or | BasicPrelude |
| Ord | CorePrelude, BasicPrelude |
| Ordering | CorePrelude, BasicPrelude |
| otherwise | CorePrelude, BasicPrelude |
basic-prelude-0.3.13: An enhanced core prelude; a common foundation for alternate preludes.