On 7 July 2016 at 11:01, Sue Shumway <chale...@us.ibm.com> wrote:
> Just out of curiosity, if ePubs of z/OS books provided all the same 
> functionalities as PDFs (same technical content, same methods for 
> obtaining/saving, etc.), plus had added benefits such as visual scaling and 
> accessibility, would you still be so adamant about keeping PDFs?

It seems to me that the great claim-to-fame of PDFs is "print
fidelity", i.e. if you print or display a PDF document it looks
exactly the same as what the author intended, and is the same for
everyone on every device. Well everyone has seen this fail to some
extent, but still, it is a fundamental goal of the format. So fonts,
column spacing, page breaks, and of course colours on suitable devices
are *the same*, subject only to scaling and maybe font substitution if
necessary.

Other presentation formats have quite different goals. In particular,
HTML and friends are geared more to matching the content suitably to
the available presentation device, and I gather the ereader formats
are similar in this respect. For example exact pagination is not
maintained when you read a book on a Kindle; the text flow is more
important when you are reading a novel. Perhaps the author can enforce
some degree of fidelity, but I don't think it's a fundamental feature.

I'm not sure how important these goals are when talking of IBM pubs.
In the old .BOO format, tables often lost their alignment, and so for
example the descriptions of RACF return codes which have three levels
were often very hard to interpret in .BOO books, but always correct
(at least as correct as the author made them) in PDFs. Clearly reading
a print-fidelity document on a very small screen requiring much
windowing is no fun. But the layout does have to be maintained in
order to keep the technical results clear; these are for the most part
not novels or general text.

May I suggest you look at the RACF manual I mentioned above? It's
"SA23-2294-01 z/OS Security Server RACROUTE Macro Reference Version 2
Release 1". Drill down to "Chapter 3 System macros", then "RACROUTE
REQUEST=VERIFY (standard form)", and then "Return codes and reason
codes". The PDF version is "correct". See if/how you can get the
return and reason codes with their text descriptions to be readable on
several devices with various screen sizes.

Thanks,

Tony H.

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