| ObjectLiteral | Language.PureScript.AST.Literals, Language.PureScript.AST |
| ObjectUpdate | Language.PureScript.AST.Declarations, Language.PureScript.AST |
| ObjectUpdateNested | Language.PureScript.AST.Declarations, Language.PureScript.AST |
| onTypeSearchTypes | Language.PureScript.AST.Declarations, Language.PureScript.AST |
| onTypeSearchTypesM | Language.PureScript.AST.Declarations, Language.PureScript.AST |
| Op | Language.PureScript.AST.Declarations, Language.PureScript.AST |
| OpBinder | Language.PureScript.AST.Binders, Language.PureScript.AST |
| OpName | |
| 1 (Type/Class) | Language.PureScript.Names |
| 2 (Data Constructor) | Language.PureScript.Names |
| OpNameType | Language.PureScript.Names |
| orderingEQ | Language.PureScript.Constants.Prim |
| orderingGT | Language.PureScript.Constants.Prim |
| orderingLT | Language.PureScript.Constants.Prim |
| OtherHint | Language.PureScript.AST.Declarations, Language.PureScript.AST |
| overConstraintArgs | Language.PureScript.Types |
| overConstraintArgsAll | Language.PureScript.Types |
| overConstraintKindArgs | Language.PureScript.Types |
| overTypeDeclaration | Language.PureScript.AST.Declarations, Language.PureScript.AST |
| overTypes | Language.PureScript.AST.Traversals, Language.PureScript.AST |
| overValueDeclaration | Language.PureScript.AST.Declarations, Language.PureScript.AST |