Program sfxcorr | Cross-correlation function  
[SYNOPSIS]
sfxcorr < in.rsf match=match.rsf > out.rsf lagfile=lagfile.rsf l=n1y-1
[COMMENTS]
C=XCORR(X,Y,L), computes the (auto/cross) correlation over the range of lags:
-L to L, i.e., 2*L+1 lags. If L is left out, default is L=n1-1, 
where n1 is the length of Y.

[PARAMETERS]
int     | l | =n1y-1 |   | 	maxlag of auto/cross correlation function
string  | lagfile | = |   | 	auxiliary output file name
file    | match | = |   | 	auxiliary input file name
[DIRECTORY]
user/chenyk
