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How does Tongda letter add bollinger bands and moving averages to experts?

Create a new master drawing formula:

Moving average

MA5:MA (close to, 5);

MA 10:= MA(CLOSE, 10);

MA30:MA (close to 30);

bollinger band

BOLL:MA (closing, 20);

UB:BOLL2*STD (closing, 20), LINETHICK2

LB:BOLL-2*STD (closing price, 20), LINETHICK2