octenc_key_record *lock(const octopus_entity &ent);
//!< locates the key for "ent", if it's stored.
- /*!< the returned object, unless it's NIL, must be unlocked. */
+ /*!< the returned object, unless it's NULL_POINTER, must be unlocked. */
void unlock(octenc_key_record *to_unlock);
//!< drops the lock on the key record in "to_unlock".