acknowledgements and copyright

Should [Syntaxes] & [Schema] include X.500 in
Acknowledgements?  Maybe [Protocol] and [Roadmap] too.
[Models] does.  The other drafts don't seem to need to.

I'm wondering how the copyright notices work.  The drafts'
copyright notices say Copyright ... <just one year>.  Yet
copyright notices I see in software tend to have a list of
years, right back to when the code was first written.

-- 
Hallvard