        old = G_define_option();
        old->key			= "input";
        old->type			= TYPE_STRING;
        old->required			= YES;
        old->multiple			= NO;
        old->gisprompt			= "old,dig_ascii,ascii";
        old->description		= "ascii vector map to be transformed";
        
        new = G_define_option();
        new->key			= "output";
        new->type			= TYPE_STRING;
        new->required			= YES;
        new->multiple			= NO;
        new->gisprompt			= "new,dig_ascii,ascii";
        new->description		= "resultant ascii vector map";

        xyfile = G_define_option();
        xyfile->key			= "input";
        xyfile->type			= TYPE_STRING;
        xyfile->required		= NO;
        xyfile->multiple		= NO;
        xyfile->description		= "file holding transform coordinates";
        
        verbose = G_define_option();
        verbose->key			= "output";
        verbose->type			= TYPE_STRING;
        verbose->required		= NO;
	verbose->options		= "y,yes,n,no";
        verbose->description		= "print residuals and other info?";
