mesh(80,25)
dialog_font('helvetica',18)

dialog 'Main'("Crystals 3D Demo",default,default,default,centered,centered,default)
vbox(justify)
        custom(main_slot,25,25,"Control3D")
        hbox(center)
                checkbox(show_billboards,"Show &Billboards",'yes')
                ok("remake","&Remake Scene")
        end_of_hbox
end_of_vbox
end_of_dialog