Synopsis
		sfpad < in.rsf > out.rsf beg#=0 end#=0 n#=

n#out is equivalent to n#, both of them overwrite end#.

Parameters
		int beg#=0 the number of zeros to add before the beginning of #-th axis   int end#=0 the number of zeros to add after the end of #-th axis   int n#= the output length of #-th axis - padding at the end

Used In
		BEI          dwnc/sigmoid ft1/autocor ft1/brad   CWP          geo2006TimeShiftImagingCondition/flat geo2006TimeShiftImagingCondition/zicig geo2007StereographicImagingCondition/flat4 geo2007StereographicImagingCondition/gaus1 geo2007StereographicImagingCondition/sigsbee2 geo2008InterferometricImagingCondition/circle geo2008InterferometricImagingCondition/sact1 geo2008IsotropicAngleDomainElasticRTM/marm2allA geo2008IsotropicAngleDomainElasticRTM/marm2oneA geo2008NumericWEMVAoperators/flatWEMVA geo2008NumericWEMVAoperators/saltWEMVA geo2009TTIModeSeparation/fold geo2009TTIModeSeparation/marmousi2 geo2009TTIModeSeparation/tti3 geo2009VTIModeSeparation/separate2 geo2009VTIModeSeparation/separate3 geo2009VTIModeSeparation/separate5 geo2009VTIModeSeparation/sigsbee geo2011WideAzimuthAngleDecomposition/flatEICangle geo2011WideAzimuthAngleDecomposition/seam357 jse2006RWEImagingOverturningReflections/sigsbee pept2011MicroearthquakeMonitoring/saf1 pept2011MicroearthquakeMonitoring/saf2 pept2011MicroearthquakeMonitoring/saf3   DATA          nankai/shots   GEE          ajt/conv iin/miss1figs lmn/sep73 lsq/antoine lsq/lomask mda/misif noiz/antoine noiz/mad pch/tvdecon prc/seabeam   GEO384W          hw3/synth hw5/hyper2   GEO391          hw5/seabeam   GEOSTATS          spatial_stats/correlogram spatial_stats/covariance spatial_stats/gr_variogram spatial_stats/variogram   GPGN658          fdmod/exercise rtmig/exercise   HANSUNG          cgg/syn   JSG          attr/vecta diffr/chan3d diffr/fault diffr/gom flat/comaz flat/flat flat/flatelf lowrank/fio lpf/lpf lpf/plut lpf/ray lpf/simon ltft/groll ltft/timefreq ltft/vecta oc3/bei oc3/fault oc3/french oc3/frenchint reversible/delta seislet/plane shape/beivc simistack/bei stackadcig/flat time2depth/masha2 timefreq/chev timelapse/timelapse vc3/fracs vc3/threedim   MILANO          taupvel/cmp   RSF          rsf/rsftour school/complex school/sigsbee school/single su/rsflab8   SEP          angle/agmig bspl/chirp fmeiko/tri forwd/chirp helft/mult helft/spike oc2/cup oc2/elfshot pwd/dune pwd/hector pwd/lomo stack/miginv stack/velinv vc2/beivc vc2/elfvc vc2/sigvc vc2/spec vc2/vcmod velspec/impls velspec/sigvc   SWAG          tau/lens