+ _sync_marked (Properties::sync_marked, other->_sync_marked) \
+ , _left_of_split (Properties::left_of_split, other->_left_of_split) \
+ , _right_of_split (Properties::right_of_split, other->_right_of_split) \
+ , _valid_transients (Properties::valid_transients, other->_valid_transients) \
+ , _start(Properties::start, other->_start) \
+ , _length(Properties::length, other->_length) \
+ , _position(Properties::position, other->_position) \
+ , _sync_position(Properties::sync_position, other->_sync_position) \
+ , _muted (Properties::muted, other->_muted) \