+=item MEMCACHED_BEHAVIOR_USER_DATA
+
+This allows you to store a pointer to a specifc piece of data. This can be
+retrieved from inside of memcached_fetch_exectue(). Cloning a memcached_st
+will copy the pointer to the clone.
+
+=item MEMCACHED_BEHAVIOR_BUFFER_REQUESTS
+
+Enabling buffered IO causes commands to "buffer" instead of being sent. Any
+action that gets data causes this buffer to be be sent to the remote
+connection. Quiting the connection or closing down the connection will also
+cause the buffered data to be pushed to the remote connection.