One (also labelled "L"): Restricts the transmission to 1st gear only, often called a "low gear". This is helpful when a significant torque is required on the wheels (as an example, when accelerating up a steep incline); however use at higher speeds can run the engine at an excessive speed, https://devinhlmjg.fitnell.com/74928686/gearbox-auto-can-be-fun-for-anyone