Crease (Creasing): (1)Impress an indented line across a sheet of paper or board for ease of folding .See Score .(2)A folding fault which leaves a crease in the sheet .

• （1）压摺胶布（2）绉纹:（1）在纸张或纸板上压印凹下线条，方便屈指。（2）摺纸时造成起绉的故障。