Coordinate values for a rectangle can be within the range –32,768 to 32,767. Widths and heights, which must be positive, are within the range 0 to 32,767. This means that a rectangle whose left and right sides or whose top and bottom are further apart than 32,768 units is not valid. Figure 1.3 shows a rectangle whose upper-left corner is left of the origin, but whose width is less than 32,767: