/* holod.h */
EXTERN struct t_holod {
	float fcool, 
	  dfcool, 
	  feheat;
	}	holod;

/*
 *     cooling computed by Katya's FeII model atom
 *     fcool is total cooling (or heating if negative)
 *     and dfcool is its derivative
 *     holod is Russian for cold
 */