I have to agree that an organised documentation project for Pd would be invaluable.
If someone is planning on organising such a thing, I'm raising my hand as someone willing to participate.
[>] what I have in mind is a reference manual -- comprehensive and [>] synchronized with Pd development. One would use tutorials for [>] learning, help patches for a quick reminder and for checking [>] things, but the ultimate knowledge base is the reference manual. [>] Max has it, msp has it, even osw has it -- but not Pd.