Program sftraveltime2d | Oriented zero-offset migration. 
[SYNOPSIS]
sftraveltime2d < dist.rsf time=time.rsf dept=dept.rsf len=lent.rsf > imagt.rsf xsrc= tolz= tolx= frontt0= frontdt= frontnt= fronteps= interpolate= timez0= minpath= front= eik=
[PARAMETERS]
file    | dept | = |   | 	auxiliary input file name
string  | eik | = |   | 	
string  | front | = |   | 	
float   | frontdt | = |   | 	
float   | fronteps | = |   | 	
int     | frontnt | = |   | 	
float   | frontt0 | = |   | 	
int     | interpolate | = |   | 	first arrivals 
file    | len | = |   | 	auxiliary input file name
string  | minpath | = |   | 	
file    | time | = |   | 	auxiliary input file name
string  | timez0 | = |   | 	
float   | tolx | = |   | 	
float   | tolz | = |   | 	
float   | xsrc | = |   | 	
[DIRECTORY]
user/roman
