Understanding Spinning Tops

https://www.investopedia.com/terms/s/spinning-top.asp

BullScript

[target=price;Alias=SpinningTop]
_diff := 100 * Abs(Open-Close)/Open;

_openCloseDiff := if(_diff < 0.1,true,false);

_highLow:= if(High > close and High > open and Low < close and low < open,true, false);

[linestyle=marker;]

_openCloseDiff and _highLow;

How to add a new indicator

https://kb.bullcharts.com.au/knowledge-base/demonstration-how-to-create-a-custom-indicator-using-script-text-from-another-user/