Synopsis
		sfhelmmig < in.rsf > out.rsf source=source.rsf data=data.rsf us=us.rsf ur=ur.rsf timg=timg.rsf verb=n save=n load=n uts=0 nh=0 npml=10 order=

Parameters
		string data= auxiliary input file name   bool load=n [y/n] load LU   int nh=0 horizontal space-lag   int npml=10 PML width   string order= discretization scheme (default optimal 9-point)   bool save=n [y/n] save LU   string source= auxiliary input file name   string timg= auxiliary output file name   string ur= auxiliary output file name   string us= auxiliary output file name   int uts=0 number of OMP threads   bool verb=n [y/n] verbosity flag