FYI. There is also a work started by Izdebski (editor of "Swiat Brydza" - Polish Bridge World) on developing WJ Baza (Base). Izdebski was taking part in a development of Nasz System/ Strefa - variation of Polish Club with more natural openings 11-21 PC - a system becoming more and more popular in Poland (eg. Kwiecien-Pszczola played it). I think Izdebski wants to propose WJ which will have many sequences similar to Strefa, the "only" difference will be: openings - 11-17 in WJ, 11-21 in Strefa and structure after strong club in WJ ;-)) In general - you will be able to see more WJ variations in people's profiles in BBO: WJ 2000, WJ 2005, WJ Baza ;-))) Marcin