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Old 04-04-2008, 02:01 AM   #44
Peter Sorotokin
speaking for myself
Peter Sorotokin knows what time it isPeter Sorotokin knows what time it isPeter Sorotokin knows what time it isPeter Sorotokin knows what time it isPeter Sorotokin knows what time it isPeter Sorotokin knows what time it isPeter Sorotokin knows what time it isPeter Sorotokin knows what time it isPeter Sorotokin knows what time it isPeter Sorotokin knows what time it isPeter Sorotokin knows what time it is
 
Posts: 139
Karma: 2166
Join Date: Feb 2008
Location: San Francisco Bay Area
Device: PRS-505
Quote:
Originally Posted by jgray View Post
While I am glad that Adobe has a mechanism to do the numbeing (...), I am leary of using such extensions. If you use them, you're epub is no longer standard, but proprietary Adobe. I don't know whether Adobe is simply trying to address some of the current epub shortcomings, or if they are trying to pollute the standard and drive customers to their own solutions. (Paranoia mode on) Perhaps they are even doing this to force future versions of the epub spec to include their way of doing things, instead of some other way, which may be better.
We are trying to address the shortcomings. We had to do that because certain vendors needed page numbers and simply could not use EPUB without that feature. We will work with IDPF to standardize it. And if you know a better way, I'd like to hear about it.

Some requirements for page numbers that we found to be important:
  • page number to content mapping is the same for all devices, viewport and font sizes
  • getting the page count and navigating to a particular page does not require reading software to parse complete book content
  • reasonable default should be defined for EPUBs without any page information specified
  • page map info is easy to add as a post-processing step
  • named pages are supported (e.g. "iii" or "B-7"), not only numbered pages.
  • (nice to have) page breaks for multiple editions can be supplied in the document
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