Re: CFD: eXIf 2017-05-31

On Sat, Jun 3, 2017 at 6:27 AM, Pavel Zlatovratskii <[email protected]> wrote:
>
> 02.06.2017 20:52, Glenn Randers-Pehrson пишет:
>>
>> First off, it begins with "It is recommended..."
>>
> Ok. I find out that part of problem is my English... for me "recommended" is
> pretty weak condition like "here is recommendations, but you may do as you
> wish".
> As of RFC 2119 "recommended" is much more strict condition, same as "should"
> and prevent treatment "oh, just recommendation, don't care".
>
> To avoid such misunderstanding in future I propose to add reference to
> RFC2119 (as marked in RFC).
>
>       The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL
>       NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED",  "MAY", and
>       "OPTIONAL" in this document are to be interpreted as described in
>       RFC 2119.
>
>

We have the following already in the PNG specification version 1.2.  I suppose
we could copy it into the png extensions document, where the eXIf chunk
specification will reside if we approve it:

<p>The words "must", "required", "should", "recommended", "may", and
"optional" in this document are to be interpreted as described in
RFC-2119, which is consistent with their plain English meanings.  The word
"can" carries the same force as "may".


> May be it also will be nice to change word to 'should' which is same for
> RFC, but more looks like caution (at least for me). However it will be not
> important with reference to RFC.


Glenn

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