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From: "Rod Pemberton" <dont_use_email@xnohavenotit.cnm>
Newsgroups: comp.lang.forth
Subject: Re: suggestions for word names?
Date: Tue, 18 Feb 2014 18:17:16 -0500
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On Tue, 18 Feb 2014 08:04:07 -0500, Stefan Mauerhofer  
<smauerhofer@androsoft.ch> wrote:

> My additional stack words are:
>
> nip ( n1 n2 - n2 )
> under ( n1 n2 - n1 n1 n2 )
> tuck ( n1 n2 - n2 n1 n2 )
> drup ( n1 n2 - n1 n1 )
> dip ( n1 n2 - n2 n2 )
>
> so nup would be my under. What's the better name? under or nup ?


The only other place I've seen them is as Rob Chapman's Stack Quarks,
but I'm not as familiar as others here ...

Quarks
http://clubweb.interbaun.com/~rc/Timbre/ContentPages/Timbre/SQP/StackQuarksPaper.html


I think those are equivalent to his, but a few are named differently:

UNDER -> NUP
DRUP -> DIP
DIP -> DRIP


As Marcel pointed out, it's convenient to have NIP and TUCK, but the
others really aren't needed for Forth.


Normally, interpreted Forths only kept one stack item kept in registers,
i.e., TOS top-of-stack.  If you have two stack items kept in registers,
Quarks become convenient to define Forth stack operations in terms of a
stack and two registers.  However, they aren't generally needed for coding
in Forth.


Rod Pemberton