I realised just now that in GTD, David distinguishes general reference filing from discrete filing:
I haven't been able to figure out from the book if David discusses these discrete filing systems elsewhere. Apparently not. Therefore, I am a bit confused if I can put client projects related stuff into the general reference system. Any thoughts? When David says 'specialized filing systems' is he referring to to conceptual or physical systems?
We're concerned here mostly with general reference filing- as distinct from discrete filing systems devoted to contracts, financial information, or other categories of data that deserve their own place and indexing.