> Question: What about the "Grandma BL"? > > Also, do you really want to call these components "Grandma, Mother, and > Baby"? It's perhaps a little corny :-) I would prefer "Primary, Secondary, > and Tertiary". Then you can abbreviate them "PBL, SBL, and TBL" or "BL1, BL2, > and BL3" or whatever. Well, there is a real meaning between these grandma-mother-baby qualifiers, that would be lost with a BL1, BL2, BL3 scheme. You need only one grandma-BL (Jarl doesn't use the term, but in my mind it's the part responsible for "centralized distribution") to control a whole "piper program". You need many mother-BL's (one on each machine) for one grandma-BL. The same way, there are many baby-BL's for one mother-BL (many baby-BL's on each machine). If you don't like baby and grandma, what about super-BL (SBL), mother-BL (MBL) and child-BL (CBL)? BTW Jarl, your document really reflects what we agreed on friday! Jean-Marc -- Jean-Marc Valin Universite de Sherbrooke - Genie Electrique valj01 at gel.usherb.ca