; card_on.sfa - Thomas G. Ferguson, Abrams Planetarium, March 2002
; This file draws the night sky.

0:00 buttons 2,3 play ./card_off
     buttons 2,3 label 'Card  Off'
     declare global cardinal
     adjust cardinal brightness 0
     draw obstinate cardinal
     att in 0 0 0 /o cardinal/ u +10
     adjust cardinal draw 2
     adjust cardinal brightness 100 /until +2
     end