Synopsis
		sfheadercut mask=head.rsf < in.rsf > out.rsf

The input data is a collection of traces n1xn2,
mask is an integer array of size n2.

Parameters
		file mask= auxiliary input file name

Used In
		JSG          apefint/misscurv apefint/missing oc3/fault oc3/frenchint   RSF          rsf/sfdots   SEP          oc2/cup plane/qint