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

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
		bool inv=n [y/n] inversion flag   file mask= auxiliary input file name

Used In
		CWP          jse2006RWEImagingOverturningReflections/sigsbee   DATA          alaska/line31-81-m8r cant12/lpf cant12/stk nankai/data nankai/shots p-cable/ntg seam-phase1-2d/cvs teapotdome/tahsubset teapotdome/teamodel   GALLERY          bp/model hessvti/model sigsbee/ffd sigsbee/lowrank sigsbee/lrostep sigsbee/model sigsbee/oway   GEE          ajt/galilee hlx/helgal iin/galilee mda/elita mda/mad noiz/antoine noiz/rbst   GEO384S          hw1/data hw2/groundroll hw2/land3d hw3/nmo hw3/nmo3d hw4/teapot hw5/pradon hw6/gazdag   RSF          reprobook/exam3 scons/rsf su/rsfkfupm su/rsflab11 su/rsflab12 su/rsflab13 su/rsflab14 su/rsflab16 tutorials/cs tutorials/petro1 tutorials/petro2 tutorials/rockphysic tutorials/well-tie   SEP          bspl/sei3d burg/gtens geostat/miss seaofgal/gal super/tau   TCCS          nar/mirko nar/trace nmo3/mcelroy npm/mirko npm/trace ovc/nankai probdif/nankai scan3/realdata t2dweak/alaska welllogs/logs wetm/nankaizone   UH          avostack/synh avostack/synl   ZJU          diffrlrra/nankai_new