PRO dustem_write_tls,dir,st,help=help

;+
; NAME:
;   dustem_write_tls
;
; PURPOSE:
;   writes information relating to TLS model parameters in the .DAT files 
;
; CATEGORY:
;    DustEMWrap, Distributed, LowLevel, Initialization
;
; CALLING SEQUENCE:
;   dustem_write_tls,dir,st
;
; INPUTS:
;    st   : dustem data structure
;    dir  : output directory where file will be written
;
; OPTIONAL INPUT PARAMETERS:
;    None
;
; OUTPUTS:
;    None
;
; OPTIONAL OUTPUT PARAMETERS:
;    None
;
; ACCEPTED KEY-WORDS:
;    help     : writes this help
;
; COMMON BLOCKS:
;    None
;
; SIDE EFFECTS:
;    Files are written
;
; RESTRICTIONS:
;    The DustEM fortran code must be installed
;    The DustEMWrap IDL code must be installed
;
; PROCEDURES AND SUBROUTINES USED:  
;
; EXAMPLES:
;
; MODIFICATION HISTORY:
;    Evolution details on the DustEMWrap gitlab.
;    See http://dustemwrap.irap.omp.eu/ for FAQ and help.  
;-
  
  IF keyword_set(help) THEN BEGIN
     doc_library,'dustem_write_tls'
     goto,the_end
  ENDIF
  
  
Ncomments=6
c=strarr(Ncomments)

c(0)='# DUSTEM: constants for the DCD and TLS effects'
c(1)='# a_dtls       lc(nm)     c_delta'
c(2)='# vt(cm/s)     P*mub^2    gamma_e(eV)' 
c(3)='# omega_m(s-1) tauO(s-1)  Vo(erg)     Vmin(erg)   Vm(erg)'
c(4)='# ldtresh(microns)'
c(5)='#'
Nst=n_elements(st)

FOR i=0L,Nst-1 DO BEGIN

    ffile=st(i).file

    if ffile ne '' then begin

	fv=str_sep(ffile,'/')
    	file=dir+fv(n_elements(fv)-1)
    	openw,unit,file,/get_lun

    	FOR ii=0,Ncomments-1 DO printf,unit,c(ii)

    	printf,unit,st(i).a_dtls,st(i).lc,st(i).c_delta
        printf,unit,st(i).vt,st(i).Pmu,st(i).gamma_e
        printf,unit,st(i).omega_m,st(i).tau_0,st(i).V0,st(i).Vmin,st(i).Vm
        printf,unit,st(i).ldtresh
   ; 	printf,unit,st(i).cteta0,format='(1E8.2)'
   ; 	printf,unit,st(i).npol,format='(I1)'

    	close,unit
    	free_lun,unit

    endif

ENDFOR
;stop
the_end:
END