M13:MA(C,13);
M21:MA(C,21);
DRAWTEXT(CROSS(C,M13),L*0.9,'↖买入'),COLORRED;
DRAWTEXT(CROSS(C,M21),L*0.8,'↖加仓'),COLORMAGENTA;
DRAWTEXT(CROSS(M13,C),H*1.1,'↙空仓'),COLORGREEN;
DRAWTEXT(CROSS(M21,C),H*1.2,'↙做空'),COLORLIGREEN;
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