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From: "Peter Knaggs" <pjk@bcs.org.uk>
Newsgroups: comp.lang.forth
Subject: Re: Specifying interfaces of "read-ahead" words
Date: Wed, 13 Feb 2013 07:39:03 -0000
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On Mon, 11 Feb 2013 15:10:49 -0000, Mark Wills <forthfreak@gmail.com>  
wrote:
> On Feb 11, 8:07 am, "Peter Knaggs" <p...@bcs.org.uk> wrote:
>> On Tue, 05 Feb 2013 21:54:32 -0000, Mark Wills <forthfr...@gmail.com>
>> wrote:
>>
>> > Sure, but "<spaces>name" does not come from the _stack_ so why is it
>> > shown on the input side of a _stack signature_.
>>
>> Because it is a "signature" rather than a "stack signature".  The input
>> stream forms part of the input to the word.
>
> When did this name/usage change take place? Was it with the adoption
> of ANS?

ANS refers to it as a "stack notation" (2.2.2) although in "Parsed-text  
notation" (2.2.3) it then adds the " notation to the stack description.  I  
have always thought of it as a signature, it makes it much easer to reason  
about the stack operation.

-- 
Peter Knaggs