extern void add_thing_to_memory_map(struct Thing * t, uint8_t type,
uint8_t y, uint8_t x);
-/* Free ThingAction/ThingType/Thing chain starting at "ta"/"tt"/"t". */
+/* Free ThingAction / ThingType / Thing / ThingInMemory chain starting at "ta" /
+ * "tt" / "t" / "tm".
+ */
extern void free_thing_actions(struct ThingAction * ta);
extern void free_thing_types(struct ThingType * tt);
extern void free_things(struct Thing * t);
+extern void free_things_in_memory(struct ThingInMemory * tm);
/* Return pointer to ThingAction/ThingType of "id", or NULL if none found. */
extern struct ThingAction * get_thing_action(uint8_t id);