Program sfcpef1 | Estimate complex PEF on the first axis. 
[SYNOPSIS]
sfcpef1 < in.rsf > out.rsf nf= niter=2*nf
[PARAMETERS]
int     | nf | = |   | 	filter length 
int     | niter | =2*nf |   | 	number of iterations 
[DIRECTORY]
user/gee
