.. c:type:: MEMCACHED_BEHAVIOR_RETRY_TIMEOUT
-When enabled a host which is problematic will only be checked for usage based on the amount of time set by this behavior.
+When enabled a host which is problematic will only be checked for usage based on the amount of time set by this behavior. The value is in seconds.
.. c:type:: MEMCACHED_BEHAVIOR_HASH_WITH_PREFIX_KEY
-When enabled the prefix key will be added to the key when determining server by hash.
+When enabled the prefix key will be added to the key when determining server
+by hash. See :c:type:`MEMCACHED_CALLBACK_NAMESPACE` for additional
+information.