Program sftestapef | Test linear adaptive PEF operator. 
[SYNOPSIS]
sftestapef < in.rsf > out.rsf sfilt=sfilt.rsf nfilt=nfilt.rsf adj=y verb=n sign=y
[PARAMETERS]
bool    | adj | =y |  [y/n] | 	if y, perform adjoint operation 
file    | nfilt | = |   | 	auxiliary input file name
file    | sfilt | = |   | 	auxiliary input file name
bool    | sign | =y |  [y/n] | 	if y, test signal PEF; otherwise, test noise PEF 
bool    | verb | =n |  [y/n] | 	verbosity flag 
[DIRECTORY]
user/yliu
