MID :  MA(CLOSE,20);
UPPER: MID + 2*STD(CLOSE,21),LINETHICK5;
LOWER: MID - 2*STD(CLOSE,21),LINETHICK5;
UP: MID + 3.4*STD(CLOSE,21),POINTDOT ;
WE: MID - 2.9*STD(CLOSE,21),LINESTICK  ;
DRAWTEXT(CROSS(H,UPPER),H+0.05,'→☆')POINTDOT ;
DRAWICON(CROSS(C,UPPER),H+0.09 ,9);
DRAWICON(CROSS(C,UP),H+0.04 ,5);
DRAWTEXT(CROSS(H,UP),H+0.08,'→上賣'),COLORLIBLUE;
DRAWICON(CROSS(LOWER,C),L-0.02 ,19);
DRAWTEXT(CROSS(LOWER,C),L-0.02,'→觀注'),COLOR00FF00;
DRAWICON(CROSS(WE,C),L-0.04 ,10);
DRAWTEXT(CROSS(WE,L),L-0.06,'→下△'),COLOR0080FF;
DRAWTEXT(UPPER/LOWER<=1.103,LOWER-0.06,'△'),POINTDOT ;