Synopsis
		sffcoh1 < in.rsf > out.rsf idip=idip.rsf xdip=xdip.rsf ntw=5 twod=y verb=y min1=-2 max1=2 min2=-2 max2=2

Parameters
		string idip= inline dip (auxiliary output file name)   int max1=2 inline slope   int max2=2 xline slope   int min1=-2   int min2=-2   int ntw=5 half window size for coherence   bool twod=y [y/n] y: only twod coherence   bool verb=y [y/n] verbosity   string xdip= crossline dip (auxiliary output file name)