Synopsis
		sfmpipsp velocity=in.rsf source=src.rsf solution=out.rsf n1=origNx n2=origNy n3=origNz freq= sigma=1.5 pmlSize=5

Parameters
		freq= frequency in HZ   n1=origNx   n2=origNy   n3=origNz   pmlSize=5 number of grid points of PML   sigma=1.5 magnitude of PML stretching   file solution= auxiliary output file name   file source= auxiliary input file name   file velocity= auxiliary input file name

Used In
		TCCS          psp/models psp/overthrust