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Date: Mon, 31 Dec 2001 17:39:44 -0500
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From: DJ Delorie <dj AT delorie DOT com>
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	on Mon, 31 Dec 2001 22:22:20 +0000 (UTC))
Subject: Re: SIGWINCH and SIGPIPE
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> Thank you. When is SIGHUP possible? Can it ever happen in non-networking
> environment?

Have you tried reading the documentation?  The signal() function
documents all the signals, including this note (among others):

@item SIGHUP

The Hang-up signal.  Currently unused.

C:\> info libc a signal