https://www.prorealcode.com/topic/new-drawing-instructions-anchoring-in-pixels/
Xshift : defines an abscissa coordinate in pixel offset from the anchor point
Yshift : defines an ordinate coordinate in vertical pixel offset from the anchor point
Index : Defines an abscissa coordinate in barindex (classic way)
Value : Set an ordinate coordinate in price/value (classic way)
bottomright : bottom-right corner of the chart, the offset values will always be negative to shift left (X axis) and positive to shift up (Y axis).
bottomleft : bottom-left corner of the graph
the offset values will always be positive in order to shift to the right (X axis) and up (Y axis).
topright : top-right corner of the graph
the offset values will always be negative in order to shift to the left (X axis) and down (Y axis).
topleft : top-left corner of the graph
the offset values will always be positive in order to shift to the right (X axis) and negative in order to shift down (Y axis).
right : middle-right point of the graph
the shift values will always be negative to shift to the left (X axis) and can be positive or negative to shift up(+)/down(-) (Y axis)
left : middle-left point of the graph
the shift values will always be positive to shift to the right (X axis) and can be positive or negative to shift up(+)/down(-) (Y axis)
top : middle-top point of the graph
the shift values can be positive or negative for shift right(+)/left(-) (X axis) and will always be negative to shift down (Y axis)
bottom : middle-low point of the graph
the shift values can be positive or negative for shift to the right(+)/left(-) (X-Axis) and will always be positive in order to shift up (Y-Axis)
middle: middle point of the graph
the shift values can be positive or negative for shift to the right(+)/left(-) (X-Axis) and can be positive or negative for shift up(+)/down(-) (Y-Axis)
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