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From: dxf <dxforth@gmail.com>
Newsgroups: comp.lang.forth
Subject: Re: QUIT and ABORT
Date: Mon, 26 May 2025 15:35:18 +1000
Organization: i2pn2 (i2pn.org)
Message-ID: <fea30af4b24485b1514c3f17a2278cc1fe9cb8e2@i2pn2.org>
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On 25/05/2025 2:40 pm, dxf wrote:
> ... 
> As to what ANS intended one might ask Mitch Bradley - author of CATCH and THROW.
> He can't give an official answer but it may end the speculation.

Searching revealed this 1996 c.l.f post which appears to explain how ANS came
to include -56 QUIT and why it is among the last codes in the list:

https://groups.google.com/g/comp.lang.forth/c/sHdQbjXI9DQ/m/R95b_VLybx4J

TL;DR

"Shortly after CATCH and THROW were added to the BASIS document (I think that
 it was the meeting after), Mitch Bradley proposed a list of just under 50 THROW
 codes which represented the ambiguous conditions described in the document.
 [...]
 QUIT is given an error code for completeness--my argument was that any operation
 which aborted processing should have a corresponding THROW code, and the committee
 accepted this with very little discussion." - Loring Craymer