The sides of the field are marked by white Sidelines, the goal line is marked in white or yellow, and white lines are drawn laterally across the field every from the goal line. These lateral lines are called "yard lines" and often marked with the distance in yards from and an arrow pointed toward the nearest goal line. Prior to the early 1980s, arrows were not used and all yard lines (in both multiples of 5 and 10) were usually marked with the distance to the goal line, including the goal line itself which was marked with either a "0" or "00"; in most stadiums today, only the yard markers in multiples of 10 are marked with numbers, with the goal line sometimes being marked with a "G". The centre (55-yard) line usually is marked with a "C" (or, more rarely, with a "55"). "Hash marks" are painted in white, parallel to the yardage lines, at intervals, from the sidelines.