I think what you're meaning is the positions of the crew jumpseats? Different airlines have different positions depending on how many crew are onboard. In ours there are L1 (Left 1), R1 (Right 1), L2, R2, L3, R3, L4, R4, L4A (Left 4 Assist), R4A (Right 4 Assist), L5, R5, UDL (Upperdeck Left), UDR (Upperdeck Right).