Index - L
| last | FRP.Timeless |
| lcm | FRP.Timeless |
| Left | FRP.Timeless |
| left | FRP.Timeless |
| leftApp | FRP.Timeless |
| length | FRP.Timeless |
| lex | FRP.Timeless |
| liftA | FRP.Timeless |
| liftA2 | FRP.Timeless |
| liftA3 | FRP.Timeless |
| lines | FRP.Timeless |
| log | FRP.Timeless |
| logBase | FRP.Timeless |
| lookup | FRP.Timeless |
| loop | FRP.Timeless |
| lstrict | FRP.Timeless.Signal, FRP.Timeless |
| LT | FRP.Timeless |