Unlike the Polyline function, the PolylineTo function uses and updates the current position.
A line is drawn from the current position to the first point specified by the lppt parameter by using the current pen. For each additional line, the function draws from the ending point of the previous line to the next point specified by lppt.
PolylineTo moves the current position to the ending point of the last line.
If the line segments drawn by this function form a closed figure, the figure is not filled.