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From: Hyman Rosen <hyrosen@mail.com>
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Subject: Re: In-Out Parameters for functions
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Randy Brukardt wrote:
> So I think that the only purpose of that phrase is to allow the RM to give a set
> of possible results -- something it rarely if ever does.

When it speaks about order of evaluation, it says that the operands are
evaluated in "arbitrary order". That clearly results in a limited set of
possible results.