Thanks. That means I document the descriptive architecture on the Design page. And a total prescriptive one on an extra section. Anyway the already showed figure "tentative architecture " is a prescriptive one. Shall I do as follows. Two sections for Descriptive architecture: Actual implemented architecture. documentation modified as I actually implement the platform. Prescriptive architecture: How it is envisioned but may not actually implemented. If the page is getting lengthy(hope not) can I create more extension pages? If so where? Thanks. Best Regards. Sasinda On Mon, May 14, 2012 at 7:57 PM, Paul Libbrecht <paul(a)hoplahup.net> wrote: Le 14 mai 2012 à 14:47, sasinda rukshan a écrit : I would add this as a separate section of the design page. It should be clear to evaluate that the currently implemented design is "useful enough", the extra section should show a "perspective". my 2p. paul