Specifies the type of arrowhead should be drawn.
Arrow - Indicates a normal triangle-shaped arrowhead should be drawn.Bar - Indicates a bar shaped arrowhead should be drawn.Circle - Indicates a circular-shaped arrowhead should be drawn.None - Indicates no arrowhead should be drawn.SolidArrow - Indicates a solid triangle-shaped arrowhead should be drawn.SolidCircle - Indicates a solid circular-shaped arrowhead should be drawn.SolidSquare - Indicates a solid square-shaped arrowhead should be drawn.Square - Indicates a square-shaped arrowhead should be drawn.