The manual page for dump(8) in i386 1.1 states that dump level numbers above
zero archives those files which were added or changed since *the specified*
level or lesser levels.  This is different from the manual pages for dump in
other flavors, which state that a given level captures all changes made after
the time of the lesser levels only.  I am understanding this to mean that if
I did one level zero followed by two level ones, the second level one would be
empty under NetBSD but identical to the first level one under others.  Is this
true?

Max