Synopsis
		sfinmo3gma < cmp.rsf > nmod.rsf velocity=vel.rsf half=n eps=0.01 extend=8

Velocity file contains slowness squared with n2=16 (wx,wxy,wy,A1,A2,A3,A4,A5,B1,B2,B3,C1,C2,C3,C4,C5)
following Sripanich and Fomel (2015).

Parameters
		float eps=0.01 stretch regularization   int extend=8 trace extension   bool half=n [y/n] if x,y , the second and third axes are half-offset instead of full offset   file velocity= auxiliary input file name