Re: Feedback on WP Spec from Kobo

Just a reminder about what I recall as two fundamental principles behind
the WP/PWP/EPUB 4 architecture:

--All three are intended for all types of publications. Not all file types;
all publication types.

--In that WP/PWP/EPUB 4 succession, each successive format is a valid
instance of the previous one. A valid EPUB 4 must by definition be a valid
PWP and a valid WP; a PWP must be a valid WP. But not all WPs are PWPs or
EPUB4s; not all PWPs are EPUB 4s. Thus for each of those formats the
specifications get tighter, more specific. For example, what I have always
expected is that EPUB4 (for purposes of supply chain practicality) will
require a specific type of packaging, but a PWP will permit any packaging
that is valid in the OWP. A WP may or may not be packaged at all; when it
is, in an OWP-valid way, it is a PWP. When it's packaged in the EPUB
4-specific way, and meets the other requirements of EPUB 4, it's an EPUB 4.
If it doesn't meet those other requirements, it's a PWP but not an EPUB 4.

I hope we haven't strayed from those two fundamental principles.

--Bill K

*Bill Kasdorf*
*Principal, Kasdorf & Associates, LLC*
kasdorf.bill@gmail.com
+1 734-904-6252

ISNI: http://isni.org/isni/0000000116490786
ORCiD: https://orcid.org/0000-0001-7002-4786
<https://orcid.org/0000-0001-7002-4786?lang=en>


On Fri, May 4, 2018 at 10:34 AM, Laurent Le Meur <laurent.lemeur@edrlab.org>
wrote:

> Dear Leonard,
>
> You know that EDRLab is deeply involved in the process of pushing
> accessibility in Europe. Accessibility is one of our pillars.
> WP and EPUB4 will both support a large set of accessibility features
> (mostly because the HTML content will be structured and tagged
> accordingly).
> EPUB 4 will *recommend* that publications are accessible.
> Daisy will offer ACE as a great tool for assessing and quantifying the
> accessibility of EPUB 4 and WP content.
> Still, I don't think that EPUB 4 will ever *mandate* (i.e. require) a
> certain minimum level of accessibility as defined by ACE; and this for
> strategic and practical reasons.
>
> But we'll see...
>
> Cordialement,
>
> Laurent Le Meur
> EDRLab
>
>
> Le 4 mai 2018 à 16:01, Leonard Rosenthol <lrosenth@adobe.com> a écrit :
>
> Actually, Laurent, I think there are more significant issues that will
> keep EPUB4 from being PWP. Things that the EPUB community today
> expects/requires, such as publisher information, rich accessibility, etc.
> that I would expect to see in EPUB 4 – but which are things that cannot be
> mandated in a non-curated publication ecosystem.  This has all been
> discussed before and I expect will come up again in Toronto.
>
> Leonard
>
>
>
>