Parametres ==================
seisfile      =DATA/cosy_4500
recfile       =DATA/test_rec
time          =4000.
nop           =8
stab          =.75
izfree        =8                           ! izfree >= nop/2+1
Model -----------------------
model_type    =2
vs0           =2000.
rho0          =2000.
Source ----------------------
sdepth        =100000.
aa            =0.
it0           =100
Receivers------------------------------
izrec         =8
JUNK------------------------------
icheck        =5
isnap         =0
iout          =4
iflush        =500
