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François Pinard <pinard@iro.umontreal.ca> writes:

> Hmph.  I realize how fuzzy all of this is in my head.  For example,
> could we say that a server is only a particular instance of a backend?

Properly speaking, a backend is an entity that implements a server
interface.  nnml, nntp and nnweb are backends.  A server is a named
instance of a backend, with backend slots set.

Or, rather, a backend is a class and a server is an object.  :-)

> And at which level "ephemeralness" applies?  backend, server, group?

Only groups are ephemeral (or not).

-- 
(domestic pets only, the antidote for overdose, milk.)
  larsi@gnus.org * Lars Magne Ingebrigtsen