Var1:=(CLOSE*2+HIGH+LOW)/4;
SK:= EMA(Var1,13)-EMA(Var1,73);
SD:= EMA(SK,2);
XG:(cross(sk,sd) and sk<-0.04 and (c-ref(c,1))/ref(c,1)>=0.03) or (cross(sk,sd) and sk<=-0.14 ) or (cross(sk,sd) and sk<=0.05 and (v/ma(v,5)>2 or c/ref(c,1)>0.035));