Hi all I think that we've finally found a state of equilibrium with documenting the SDK source in relation to the design doc! I've attached the latest version with only a couple more pages over the previous version with revised indexing. Mike - Hopefully, if you agree to managing using UML to prepare the final version of this doc, let me know if the current structure suites, and if not tell me where you'd like the structure to go. Kunal - Thanks for your input to the document but we're not concerned here with the specifics of compiling and debugging, as this is supposed to be a somewhat 'team friendly' document over the programmer-only type. We are focussing on breaking down the SDK into what we believe it can do for the project according to the design document. Cheers all! Dean. PS I'm going to the Guildford Chapter gathering tomorrow so most likely will not be touching the doc. If anyone is coming along give me a buzz on 07949 007 031. :) Dean.