They are imported once in each entry level stylesheet, this ensures they will
only ever be imported once, - not sure what you mean by 'rely on tools to be
aware of that'?
If you have 3 stylesheets, 'a', 'b' and 'c'.
If a imports both b and c, then you can refer to things in b from c,
however your editor would complain about the missing things unless it
knows about the entry point a.
--
Andrew Welch
http://andrewjwelch.com
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