Parametres ==================
seisfile      =DATA/homo500
recfile       =DATA/rec_500
snapfile      =
Time ------------------------
nt            =3300
dt            =.3
Spher Coord -----------------
izfree        =6
iord          =1
nop           =2
aabsorb       =.000005
Nabsorb(0;00) =50
Dmax          =5000000.
Thetamax(deg) =150.
Model -----------------------
model_type    =2
vp0           =6000.
vs0           =4000.
rho0          =2000.
Source ----------------------
isx           =10
sdepth        =100000.
aa            =0.
it0           =10 
alpha         =1000.
source_type   =2                         !1-f,2-M
Display ---------------------
idisp         =0
isnap         =100
icolor        =5
icomp         =2
Receivers------------------------------
xa            =10
xe            =250
irec          =10
izrec         =6
isamp         =1
Junk ------------------------------
ifork         =1
icheck        =1
icheckpoint   =1000
rmax          =6371000.
