Program sfweiajw | 3-D wave-equation wavefield continuation with adjoint-source 
[SYNOPSIS]
sfweiajw slo=Fslo.rsf < Fsou.rsf > Fwfl.rsf verb=n down=y causal=
[PARAMETERS]
bool    | causal | = |  [y/n] | 	causality flag 
bool    | down | =y |  [y/n] | 	up/down   flag 
file    | slo | = |   | 	auxiliary input file name
bool    | verb | =n |  [y/n] | 	verbosity flag 
[DIRECTORY]
user/psava
