The negative was "scribed" with a new form of cue mark, made at the start of each 2000-foot (610 m) reel. Similar in shape to an "F", the cue mark contained staffs that directed the projectionist to the top of the frame for the three recommended aspect ratios. The projectionist racked his framing so that the staff touched the top of his screen (at the appropriate ratio) and the framing was set for the rest of the reel. On many home video releases these cue marks have been digitally erased.