a:=(3*c+l+o+h)/6;
b:(20*a+19*ref(a,1)+18*ref(a,2)+17*ref(a,3)+16*ref(a,4)+15*ref(a,5)+14*ref(a,6)
+13*ref(a,7)+12*ref(a,8)+11*ref(a,9)+10*ref(a,10)+9*ref(a,11)+8*ref(a,12)
+7*ref(a,13)+6*ref(a,14)+5*ref(a,15)+4*ref(a,16)+3*ref(a,17)+2*ref(a,18)+
ref(a,20))/210,linethick2;
d:ma(b,10),linethick2;
MID : MA(CLOSE,26),colorcyan;
UPPER: MID + 2*STD(CLOSE,26),colorcyan;
LOWER: MID - 2*STD(CLOSE,26),colorcyan;
