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

The input data is a collection of traces n1xn2,
mask is an integer array os size n2, windowed is n1xm2,
where m2 is the number of nonzero elements in mask.

Parameters
		file mask= auxiliary input file name

Used In
		CWP          jse2006RWEImagingOverturningReflections/sigsbee   GEE          ajt/galilee hlx/helgal iin/galilee noiz/mad noiz/rbst noiz/antoine   RSF          scons/rsf   SEP          burg/gtens seaofgal/gal