Re: virtual pages is it a best practice?

In our open-source developments, we are using this notion of virtual page. We call it "position", a generic work usable for a "go to position X" feature, which avoid a semantic clash with the word "page".

We chose 1024 characters as size of each section, as we found it was used before by Adobe in some systems, but Ric Wright will certainly be able to give details.

Note that if there is not "page list" structure in the ebook, a reading app may provide a list of "virtual positions" for easy browsing instead. 
 
Cordialement, 

Laurent Le Meur
EDRLab

> Le 16 mai 2019 à 18:16, Noelia <nrm1977@gmail.com> a écrit :
> 
> I strongly agree. Moreover, pages are generally used for reference and
> quotation purposes, so for me this could be a good practice.
> 
> Best
> 
> 2019-05-16 17:54 GMT+02:00, Bill Kasdorf <kasdorf.bill@gmail.com <mailto:kasdorf.bill@gmail.com>>:
>> Interesting idea, and George, your metric is spot-on. When I had my
>> publishing services business the definition of a "page" (especially needed
>> because manuscript pages are so variable") was 2,000 characters.
>> 
>> On Thu, May 16, 2019 at 11:47 AM George Kerscher <kerscher@montana.com>
>> wrote:
>> 
>>> Hi EPUB 3 folks,
>>> 
>>> 
>>> 
>>> We have brought up the practice of including virtual pages before. The go
>>> to page function in titles that have a print equivalent  is fabulous, but
>>> what if there is no print version?
>>> 
>>> 
>>> 
>>> A quick check of character of documents I have handy shows that there is
>>> approximately 2k of characters on a page. I would think that a best
>>> practice of placing a page break indicator between block items closest to
>>> that 2k count would work well. Of course, this cannot be a requirement,
>>> but
>>> I wonder about publishing it as a best practice. IMO it would help in
>>> figuring out how large a title is.
>>> 
>>> 
>>> 
>>> Thoughts welcome.
>>> 
>>> 
>>> 
>>> Happy GAAD
>>> 
>>> George
>>> 
>>> 
>>> 
>>> George Kerscher Ph.D.
>>> 
>>> -In our Information Age, access to information is a fundamental human
>>> right.
>>> 
>>> Chief Innovations Officer, DAISY Consortium
>>> 
>>> http://www.daisy.org
>>> 
>>> Senior Advisor, Global Literacy, Benetech
>>> 
>>> http://www.benetech.org
>>> 
>>> President, International Digital Publishing Forum (IDPF)
>>> 
>>> http://www.idpf.org
>>> 
>>> Member of the National Museum and Library Services  Board (IMLS)
>>> 
>>> http://www.imls.gov
>>> 
>>> Chair Steering Council Web Accessibility Initiative (WAI), a division of
>>> the W3C
>>> 
>>> http://www.w3c.org/wai
>>> 
>>> Phone: +1 406/549-4687
>>> 
>>> Cell:+1 406/544-2466
>>> 
>>> Email: kerscher@montana.com
>>> 
>>> 
>>> 
>> 
>> 
>> --
>> *Bill Kasdorf*
>> *Principal, Kasdorf & Associates, LLC*
>> 
>> *Founding Partner, Publishing Technology Partners
>> <https://pubtechpartners.com/ <https://pubtechpartners.com/>>*
>> kasdorf.bill@gmail.com <mailto:kasdorf.bill@gmail.com>
>> +1 734-904-6252
>> 
>> ISNI: http://isni.org/isni/0000000116490786 <http://isni.org/isni/0000000116490786>
>> ORCiD: https://orcid.org/0000-0001-7002-4786 <https://orcid.org/0000-0001-7002-4786>
>> <https://orcid.org/0000-0001-7002-4786?lang=en <https://orcid.org/0000-0001-7002-4786?lang=en>>