Synopsis
		sfpow < in.rsf > out.rsf tpow=0. pow#=(0,0,...)

Parameters
		float pow#=(0,0,...) power on #-th axis   float tpow=0. power on the first axis

Used In
		BEI          dpmv/matt dwnc/vofz fld/yc ft1/brad krch/sep73 sg/denmark vela/stretch wvs/head   DATA          segsalt/data   GEE          lmn/sep73 lsq/antoine mda/pefex pch/steep pch/mideast   GEO384W          hw4/dome   GEO391          hw1/tpow   RSF          scons/rsf su/rsfkasper   SEP          cdstep/veltran pwd/lomo stack/velinv steer/wz25