| ID | Parsley.Internal.Core.Defunc, Parsley.Defunctionalized, Parsley.Internal.Core, Parsley.Internal |
| If | Parsley.Internal.Backend.Machine.Instructions, Parsley.Internal.Backend.Machine |
| ifst | Parsley.Internal.Common.Indexed, Parsley.Internal.Common |
| IFunctor | Parsley.Internal.Common.Indexed, Parsley.Internal.Common |
| IFunctor4 | Parsley.Internal.Common.Indexed, Parsley.Internal.Common |
| IF_S | Parsley.Internal.Core.Defunc, Parsley.Defunctionalized, Parsley.Internal.Core, Parsley.Internal |
| imap | Parsley.Internal.Common.Indexed, Parsley.Internal.Common |
| imap4 | Parsley.Internal.Common.Indexed, Parsley.Internal.Common |
| IMVar | Parsley.Internal.Core.Identifiers, Parsley.Internal.Backend.Machine.Identifiers, Parsley.Internal.Backend.Machine |
| In | Parsley.Internal.Common.Indexed, Parsley.Internal.Common |
| In4 | Parsley.Internal.Common.Indexed, Parsley.Internal.Common |
| InfixL | Parsley.Precedence |
| infixL | Parsley.Precedence |
| InfixR | Parsley.Precedence |
| infixR | Parsley.Precedence |
| inop | Parsley.Internal.Common.Indexed, Parsley.Internal.Common |
| inop4 | Parsley.Internal.Common.Indexed, Parsley.Internal.Common |
| Input | Parsley.Internal.Backend.Machine, Parsley.Internal.Backend, Parsley.Internal |
| input | Parsley.Internal.Backend.Machine.State |
| InputDependant | Parsley.Internal.Backend.Machine.InputOps |
| InputOps | |
| 1 (Type/Class) | Parsley.Internal.Backend.Machine.InputOps |
| 2 (Data Constructor) | Parsley.Internal.Backend.Machine.InputOps |
| InputPrep | Parsley.Internal.Backend.Machine.InputOps |
| insertNewΣ | Parsley.Internal.Backend.Machine.State |
| insertScopedΣ | Parsley.Internal.Backend.Machine.State |
| insertSub | Parsley.Internal.Backend.Machine.State |
| insertΦ | Parsley.Internal.Backend.Machine.State |
| Instr | Parsley.Internal.Backend.Machine.Instructions, Parsley.Internal.Backend.Machine |
| intercalate | Parsley.Internal.Common.Utils, Parsley.Internal.Common |
| intercalateDiff | Parsley.Internal.Common.Utils, Parsley.Internal.Common |
| intLess | Parsley.Internal.Backend.Machine.InputRep |
| intSame | Parsley.Internal.Backend.Machine.InputRep |
| isBankrupt | Parsley.Internal.Backend.Machine.State |
| isnd | Parsley.Internal.Common.Indexed, Parsley.Internal.Common |
| item | Parsley.Combinator, Parsley |
| Iter | Parsley.Internal.Backend.Machine.Instructions, Parsley.Internal.Backend.Machine |
| IΣVar | Parsley.Internal.Core.Identifiers, Parsley.Internal.Backend.Machine.Identifiers, Parsley.Internal.Backend.Machine |
| IΦVar | Parsley.Internal.Backend.Machine.Identifiers, Parsley.Internal.Backend.Machine |