The fact about lift is true when you compare Poland (well, most of the european countries) and USA. In Europe we have Ground Floor, then 1Floor, 2 etc. In US they mark Ground Floor as 1 Floor. In countries that use the European system, the ground floor is either marked 0, or with the initial letter of the local word for ground floor (G, E, etc.), successive floors are then marked 1, 2 etc. In countries that use the North American system, where “floor 1” is the same as “ground floor”, the corresponding button may be marked either with 1 or with a letter, as in the European scheme. In either case, the next button will be labelled 2.