PRO dustem_write_taille,file,st

OPENW,unit,file,/get_lun

Ntypes=n_elements(st)

FOR i=0L,Ntypes-1 DO BEGIN
  printf,unit,st(i).alpha,st(i).tmin,st(i).tmax,st(i).ndiscr
ENDFOR

close,unit
free_lun,unit

END