[mheathr]

I have read it from the beginning, and the individuals who maintain the documentation likely have as well.

What format supports interpage linking, can be displayed both electronically and is print quality, and can be read on virtually every platform?

The only print quality formats are postscript or PDF and from that only PDFs can be viewed electronically as well being print ready.

So, there does not exist a solution that is not PDF in this case, especially if other attributes are desired such as the readers not requiring a costly license to use.

I am not incredibly happy with that being the case, but there are open source readers and exporters for (most) PDFs nowadays so it is more or less a non-issue.