When I study, I often need to have many books open at the same time, so I can search simultaneously. Having 20 diferent Adobe Acrobat windows open, however, is highly impractical, and things often crash.
What would be a similar kind of software for viewing PDFs, but that it involves MDI (multiple document interface)?
P.S. if anyone besides me wishes for MDI option in Adobe Acrobat, report here.