plot a vertical pumping/monitoring well
set the location of the well top
set the radius of the well top. default is 1.
set the well depth. if not set, it will use scnbot.
scnbot
set the screen top depth
set the screen bottom depth
set the hatch pattern of the screen intervel, default is '--'
set edge color, default is 'black'
set the face color, default is 'white'
set the zorder. default is 999999.