Program sfaimplfd1 | Implicit solution of 1-D acoustic wave equation. 
[SYNOPSIS]
sfaimplfd1 < vel.rsf > usol.rsf src=src.rsf niter=10
[PARAMETERS]
int     | niter | =10 |   | 	Number of solver iterations 
string  | src | = |   | 	Source wavelet (auxiliary input file name)
[DIRECTORY]
user/petsc
