+typedef struct edict_engineprivate_s
+{
+ // true if this edict is unused
+ qboolean free;
+ // sv.time when the object was freed (to prevent early reuse which could
+ // mess up client interpolation or obscure severe QuakeC bugs)
+ float freetime;
+
+ // physics grid areas this edict is linked into
+ link_t areagrid[ENTITYGRIDAREAS];
+ // since the areagrid can have multiple references to one entity,
+ // we should avoid extensive checking on entities already encountered
+ int areagridmarknumber;
+
+ // old entity protocol, not used