There are 4 flap lever positions which give a total of 5 different settings depending upon whether the aircraft is on the ground or in the air.
Normally position 3 or 4 is used for landing but the aircraft is capable of landing with slat (front of the wing) and flap (rear of the wing) failures of various combinations including total failure of either surface to extend.
Possibly you had a flaps 3 landing for the first time as the difference between 3 and full is quite noticeable in terms of extension.