[Quoth]

Mobi had or has a tag that means "you can't turn page forward". This is handy for a "Plot your own adventure" as then the only way forward is to select one of the internal links (to anchors) that are user choices at the end of the "Chapter".

Can this be done in epub2?

Has anyone a complete table of features that work in old mobi, AZW3/KFX and epub2. Obviously page breaks, justification types, margins, bold, italic and bold+ italic and font size all work. Monospace, serif and sans-serif font face all seem to work with those three font styles in old Mobi, at least sometimes, depending on exactly what is done in Word/Writer. Switching per paragraph seems more reliable than per word in a paragraph. Even converting to epub or AZW.

If so how can it be automated in say a docx to epub2 conversion in Calibre, perhaps by detection of the heading / chapter style and inserting the tag before.

Is there any way to indicate it in Word/Writer? Obviously a reserved style that is then converted by a rule in Calibre could be used.

Does AZW / KF8 support this ancient mobi tag? I tested it ages ago on XP using Mobi Pocket Creator. I made a MS Word Doc, exported or converted to HTML (I forget which), cleaned it up and added the extra tag after every line of choices using Notepad++. I don't use XP now or even Windows now, so I'd have to dig out the old PC and try again, or find my demo file. I wasn't using epub or azw back then.