It could be the "limited functionality" Apple expect you to include at least one of what they term "interactive" components. Such as a video introduction ..or a video / media widget, picture gallery.
They sometimes refer to line breaks due to double spacing by multi return clicks ...sometimes used to move text around or so you don't get a few words of a sentence at the bottom of s column or page.
With 23 years in printing I have seen a lot of formatting this is new to me and I am a newbe but it sounds like //text wrapping// so when the page loads in a web browser it does so with out going out of bound and looking like //crap//. no other way of putting it. word processors or a program like "Microsoft's "word" program does this automatically. and if you add photos this changes the //wrap//.
Then there is // TextWrangler Free // also, // iStudio 17.99$ //. that Apple has in there "App Store'
hope this helps also it is abot proper "English" and writing so if the grammer is not write than //Apple// is doing what any publisher is going to do and reject work that is not good enough to publish ...
There are times when the " issues" raised by the Review Team are a generalisation and may also cover more than one issue, and like most call centres/support teams, its probable that they use preset scripts and leave the interpretation to the recipient.
In the original post by J. Connor, the trigger to the problem - to my thinking - is to ignore the mention about text formatting and focus on "functionality".
To a newbie submitting a first book and without really fully understanding the iBook Store requirements, the term "Functionality" can be confusing. As I mentioned in a reply, functionality can easily be added to a book simply by inserting a Photo Gallery - even if its only 2 photos. Or any of the widgets and even more simply, by inserting a 1 minutue video into the intro page.
If iMovie us available, then adding a few photos and transitions make a simple display video which serves as an intro. So "funtionalilty" is not a major issue.
Apple created iBooks Author as a vehicle to produce more than just an eBook full of text and to assist they include the widgets which allow audio / video and other functions. Having done so, Apple righty expect those who want to submit books , to use them and add any of the functions available. hence my comment, even a 2 photo image gallery meets their re " functionality" requirement.
Some useful information in your post which will help others.
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