print, 'Setting display attributes...'
device, deco=0, retain=2, true=24 ; 24 bit true color display with backing store

 window, /free, /pixmap           ; Create window to allocate colors
 plot, [0]                        ; Might not be needed, but won't hurt
 wdelete, !d.window               ; Delete the window
 device, set_character_size=[6,9] ; Set the vector font size
 print, 'Number of colors allocated is ', !d.n_colors