Toshiaki Koike
Voyager Japan, Inc.

Voyager has dealt with electronic publishing from 1993.
Since there was no standard format at the time, we developed original formats (expanded book, dotBook).
We have pursued expression of the digital book of reflow, hearing the request of a publishing company.
As a result, I am accumulating various kinds of use-cases.
I am working in order to harness the accumulation in a standard format (ex. Readium Preject).
I would like to show the use-cases of expression which seems to be difficult by the present EPUB on the theme of "arrangement to the page in a digital book". 

For example, aren't there the definition method expressing the following use-cases and a method which may be carried out? 

# A character string is arranged in the center of a page. : image-01
# In a reflow text, a picture is arranged at the page upper left. : image-02
# In a reflow text, a picture is arranged to a whole page. Or it arranges to a left page. : image-03
# The same picture is continuously arranged at the page lower right. Like link button. : image-04

See http://www.w3.org/2013/06/ebooks/submissions/koike2.png