/* sdrmin.h */
EXTERN struct t_sdrminCom {
/*
 * these are 1e-30 and 1e30 by default, and are set with "set dr" cmnds
 * used as one of a pair of limits to how big or small zones get
 * set dr command forces constant dr by setting both to same number
 */
	float sdrmin, 
	  sdrmax;

	/*lgSMinON is flag saying that set drmin has been enteed*/
	int lgSMinON;

	/* this flag controlled in FirstDR and says whether this option
	 * caused the first zone to have larger than optimal thickness */
	int lgDR2Big;

	}	sdrminCom;