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Re: print float number

From: Greg Wooledge
Subject: Re: print float number
Date: Thu, 9 Jan 2014 08:44:57 -0500
User-agent: Mutt/

On Thu, Jan 09, 2014 at 01:56:11PM +0800, lina wrote:
> Hi Bob, my fault, I didn't realize this was a wrong way to start a new
> conversation, by renaming the Subject and deleted everything inside. How
> could they figure out it is from that thread?

Email headers include a field called "In-Reply-To" which contains the
message ID(s) of the message(s) to which you're replying.  If your
email client gives you the ability to edit the headers, and if you had
deleted the In-Reply-To header in addition to changing the subject,
then everything would have worked out as you expected.

On the receiving side, threading email clients use the In-Reply-To
headers to construct a hierarchy of "threads" of discussion.  The
notable exception to this, as always, is Microsoft.  Microsoft decided
to ignore all the standards that the rest of the world uses, and
only constructs threads by comparing the Subject headers.

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