PRO dustem_write_grain_lv,file,st

Ncomments=13
c=strarr(Ncomments)

c(0)='# DUSTEM: definition of grain populations'
c(1)='# for each grain TYPE make sure you have the following files'
c(2)='# Q_TYPE.DAT in code_f90/les_QABS'
c(3)='# C_TYPE.DAT in code_f90/les_CAPA'
c(4)='# if option(MIX) MIX_TYPE.DAT in code_f90/les_DAT'
c(5)='# if option(POL) POL_TYPE.DAT in code_f90/les_DAT'
c(6)='# if keyword(SIZE) SIZE_TYPE.DAT in code_f90/les_DAT'
c(7)='#'
c(8)='# run keywords'
c(9)='# G0 scaling factor for radiation field'
c(10)='# nr of grain types'
c(11)='# grain type -  Mdust/MH - rho(g/cm3) - amin(cm) - amax(cm) - alpha - nsize'
c(12)='#'

OPENW,unit,file,/get_lun

FOR i=0,Ncomments-1 DO BEGIN
  printf,unit,c(i)
ENDFOR

printf,unit,st.keywords
printf,unit,st.G0
printf,unit,st.ngrains
frmt='(A10,5E14.6,I4,A10)'
;frmt='(A10,5E12.2,I4,A10)'
FOR i=0,st.ngrains-1 DO BEGIN
  printf,unit,st.grains(i).type,st.grains(i).propmass,st.grains(i).densgr,st.grains(i).tmin,st.grains(i).tmax, $
              st.grains(i).alpha, st.grains(i).ndiscr,st.grains(i).flag,format=frmt
  IF !dust.grains EQ 1 THEN BEGIN
    print,st.grains(i).type,st.grains(i).propmass,st.grains(i).densgr,st.grains(i).tmin,st.grains(i).tmax, $
                st.grains(i).alpha, st.grains(i).ndiscr,st.grains(i).flag,format=frmt
  ENDIF
ENDFOR

CLOSE,unit
free_lun,unit

END