2- So far no problems with pubs made in versions 4 and 5, but problems with text from v2.
3- Yes. One method I use is: Open a new chapter (you'll need one for every different size page you want to display on top of you current main page. Check out Chapter Properties > Display in new window > Fill in parameters that suit you. You could display several pages from different chapters. Read the Help files.
Another possibility might suit you. Proceed as above, but select Display in Publication Pane, You should definitely read the Help files on this!
4- In Opus, there are generally several ways to achieve the same result. What you want might be complex because it seems that you would need to find a way to set the focus on the button that you want. I'm sure that the scripting gurus might be able to suggest a solution, but that's way above my scripting ability.
Quote:
Is there any way to do it WITHOUT MULTIFRAMES?
If you've found a way using multiframes to achieve what you want, why make life more difficult for yourself?