Sounds like an easy app to write.

Sure. No problem. It's an app.

But something odd has happened today. That is, while I'm comfortable with seeing that this is just an app, some folk think that apps are all written ahead of time and not something you create when needed. Or have created when you need them.

So sure, almost any tab can do this. Just need an app.

-> But why not old school? Just like books tell them to go to page 22? That is, load it with the reader, pop on the PDF and tell them to turn the page.