Line 1:  nreac, iwet            (free format)
 Line 2:  [blank]                (free format)
 Line 3:  descriptive title      (a80)
 Line 4:  nm, na, ng, nw         (free format)
 nm Lines:  coeff  mname  mform  (1x,f9.3,2x,a20,2x,a30)
 ng Lines:  coeff  aname  aform  (1x,f9.3,2x,a20,2x,a30)
 na Lines:  coeff  gname  gform  (1x,f9.3,2x,a20,2x,a30)
 [1 Line:   coeff  H2O    H2O]   (1x,f9.3,2x,a20,2x,a30)

*** each of the nreac reaction blocks
*** contains 3+nm+ng+na+nw lines

*******************************************************

   1   0

 H2O gas                                                                         
   0   0   1   0
     1.000  H2O,gas               H2O