Program sflpef | Find PEF on aliased traces. 
[SYNOPSIS]
sflpef < dat.rsf > pef.rsf a= center= gap= jump=2 lag=
[PARAMETERS]
ints    | a | = |   | 	 [dim]
ints    | center | = |   | 	 [dim]
ints    | gap | = |   | 	 [dim]
int     | jump | =2 |   | 	
string  | lag | = |   | 	output file for filter lags 
[DIRECTORY]
user/gee
