Index - M
| many | Psi.Control, Psi |
| mapAccumL | Psi.Data, Psi |
| mapAccumM | Psi.Data, Psi |
| mapAccumR | Psi.Data, Psi |
| mapAndUnzipM | Psi.Control, Psi |
| mapM | Psi.Control, Psi.Data, Psi |
| mapMaybe | Psi.Data, Psi |
| mapM_ | Psi.Control, Psi |
| max | Psi.Data, Psi |
| maxBound | Psi.Data, Psi |
| maxExpt | Psi.Data, Psi |
| maxExpt10 | Psi.Data, Psi |
| Maybe | Psi.Data, Psi |
| maybe | Psi.Data, Psi |
| maybeToList | Psi.Data, Psi |
| mfilter | Psi.Control, Psi |
| min | Psi.Data, Psi |
| minBound | Psi.Data, Psi |
| minExpt | Psi.Data, Psi |
| minusDouble | Psi.Data, Psi |
| minusFloat | Psi.Data, Psi |
| mkRationalBase10 | Psi.Data, Psi |
| mkRationalBase2 | Psi.Data, Psi |
| mkRationalWithExponentBase | Psi.Data, Psi |
| mod | Psi.Data, Psi |
| Monad | Psi.Control, Psi |
| MonadFail | Psi.Control, Psi |
| MonadPlus | Psi.Control, Psi |
| mplus | Psi.Control, Psi |
| msum | Psi.Control, Psi |
| mzero | Psi.Control, Psi |