拉:IF(ZX =0 AND ZX =MM,ZX,DRAWNULL),COLORRED,LINETHICK3;
派:IF(ZX =0 AND ZX MM,ZX,DRAWNULL),COLORGREEN,LINETHICK3;
落:IF(ZX 0 AND ZX MM,ZX,DRAWNULL),COLORWHITE,LINETHICK3;
TDXSTEP172:DRAWICON(ZX 0 OR ZX =0 AND CROSS(ZX =MM,0.5),ZX,17);
TDXSTEP173:DRAWICON(ZX 0 AND CROSS(0.5,ZX MM),ZX,6);