A pdf is "universal" for the most part. I've got a J8, and no problem. The wife has an iPhone 4s, no problem, etc. I've also got a cheap android tablet, bstanko6 mentions his iPad, but for me, the fone is too small to see clearly enough. The only problem with most of this "modern" technology is that the screen "blanks" just as you go to reach for it...
I agree with vdr1981 in NOT Alt-Tabbing out at all, no matter what it might look like afterwards. I have tried dual-screen set-ups, and "windowed" game set-ups, and it will still mess up. The game is a single-core, one-thing-at-a-time executable, and basically demands "exclusive" use of the computer resources. When you shell-out to Windows, it (multi-tasking Windows) might change the address of all sorts of data streams the game was using, and when you come back in, the game only pulls invalid data. It is basically not "aware", and does not communicate with Windows the way a 'modern' program would. Remember, at it's base foundation, this is SH3 (with SH4 piled on), plus some edits.