The Order method controls the Z-order of a graphics item relative to other graphics items.
            Example
            
            w = WINDOW()
            x = [0,0.25,0.25,0]
            y = [0,0,0.5,0.5]
            r = OBJARR(20)
            for i=0,19 do r[i] = POLYGON(x+i/30.,y+i/40.,FILL_COLOR=!COLOR.(i))
            WAIT, 1
             
            
            for i=0,19,2 do r[i].Order, /BRING_FORWARD
            WAIT, 1
             
            
            for i=0,19,2 do r[i].Order, /SEND_TO_BACK
            WAIT, 1
             
            
            card = (20*RANDOMU(seed,1))[0]
            r[card].Order, /BRING_TO_FRONT
            Syntax
            graphic.Order  [, /BRING_FORWARD]  [, /BRING_TO_FRONT]  [, /SEND_BACKWARD] [, /SEND_TO_BACK]
            Arguments
            None.         
            Keywords
            BRING_FORWARD        
            Set this keyword to 1 to move the graphic item upwards in the viewing order.   
            BRING_TO_FRONT        
            Set this keyword to 1 to move the graphic item to the top of the viewing order (above all other items).   
            SEND_BACKWARD        
            Set this keyword to 1 to move the graphic item downwards in the viewing order.   
            SEND_TO_BACK        
            Set this keyword to 1 to move the graphic item to the bottom of the viewing order (below all other items).   
            Version History
            
            See Also
            Select Method,
            Using IDL Graphics