; aagrid_off.sfa - John French, Abrams Planetarium, March 2002
; This file erases the Alt Azi grid.

0:00 buttons 12,7 play ./aagrid_on
     buttons 12,7 label 'AltAzi  On'
     declare global aagrid
     adjust aagrid brightness 0 /until +2
0:02 erase ob aagrid
     end