hden 5 vary
grid 0 5 0.1 
constant temperature 1e4 K
laser 3
ionization -2
element oxygen ionization -9 0
element sulphur ionization -9 0
save grid "o2s2.grd" no hash
save line list ratio "o2s2.lin" "oslines.dat" no hash
init "honly.ini"
element oxygen on 
element sulphur on 
#
stop zone 1
set dr 0