Surface: A tablet has a flat surface on which the user can draw. This surface can be of different sizes or shapes, most often a square. Images drawn on a "graphics tablet" are most often not shown on the surface itself but can only be seen on a screen. However, there are special "graphics tablets" which allow the user to see their input right on the drawing surface. These hybrids are combination of a graphics tablet and a screen. Graphics tablets often have features like "pressure sensitivity" or "stylus hovering" that most touchscreens lack"."