2004/08/09 15:17:45 fs 1.1.2.3: #i31958# UncheckedRefValue -> SecondaryRefValue
2004/06/24 09:55:13 fs 1.1.2.2: #i30674# allow second reference value for check boxes
2004/05/12 08:14:27 fs 1.1.2.1: #116712# base class for comonents supporting a reference value