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From: Steinar Bang <sb@dod.no>
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Subject: Re: What is a "virtual" group?
Date: Sun, 16 Sep 2012 18:52:07 +0200
Organization: Probably a good idea
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>>>>> Dave Abrahams <dave@boostpro.com>:

> So I'm left with

>    virtual == temporary

> Is that really all it means?

I vaguely remember when first reading about virtual groups that it
looked like you could combine several groups into one.  But I never had
a use case for that, so I never investigated further.

I also may have been mistaken in my assumptions.

> I think only someone who understands the intended meaning of "virtual"
> could answer it.

Probably.

> Lars?

Very probably.