'DATA FILE CRT.PRE: PREM.  1991, JANUARY 24.'
'MODEL.PRE'
'DCRT.PRE'
' '                   (DATA SET INIT.PRE IS INCLUDED IN THIS FILE)
'CODE.PRE'
'RPAR.PRE'
'WRIT.PRE'
'LOG.OUT'

'DATA SET INIT.PRE'
0    2                (SINGLE INITIAL POINT, GEOGRAPHIC-LIKE SPH.COOR.)
.0000 .0000 6171.  0. (SOURCE DEPTH 200 KM: 3 COORDINATES, TRAVEL TIME)

------------------------------------------------------------------------

IN THIS EXAMPLE, THE SOURCE (INITIAL POINT OF RAYS) IS SITUATED IN THE
DEPTH OF 200 KM IN THE 5-TH LAYER.  TO CHANGE THE SOURCE DEPH TO D, THE
LAST LINE OF THE ABOVE DATA SHOULD BE CHANGED TO:
.0000 .0000 6371-D 0.

WHEN THE SOURCE DEPTH IS CHANGED, THE DATA SET 'CODE.PRE' MUST BE
MODIFIED IN ACCORDANCE WITH THE LAYER (COMPLEX BLOCK) IN WHICH THE
SOURCE IS SITUATED:  IF THE SOURCE IS SITUATED IN THE L-TH LAYER, ALL
CODES OF ELEMENTARY WAVES IN THE DATA FILE 'CODE.PRE' SHOULD BEGIN IN
THE L-TH LAYER INSTEAD OF THE 5-TH ONE.  NOTE THAT THE CODE OF THE
UPGOING WAVES BEGIN WITH DOUBLE THE INDEX L IF THE COMPOUND-ELEMENT
BLOCK CODE (TYPE 3) IS USED.

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