[KHS]

If you have a single song in your library with a large PDF, you can add MobileSheets bookmarks so that you can jump between pages in the document quickly. These bookmarks can be accessed either through the bookmarks tab (if enabled) or through the bookmarks window in the song overlay.

Mike

Ah! I think I know where I got confused. When I imported a .PDF that already had PDF bookmarks, and then displayed one song from it (already created as a separate song), I saw in the Bookmarks window a very helpful clickable guide to the entire .PDF that contained that song, allowing me to navigate directly through the rest of that book even though I had opened only one song from it. I thought those were MobileSheets bookmarks, when I see now that even when I uncheck "Show All Songs" (which I take it would use the MobileSheets bookmarks), all the functionality is still there (from the PDF bookmarks) exactly the way I need it [NOPE, see OOPS! below]. Maybe it should say "Show All MS Bookmarks" instead of "Show All Songs?" (in my case, "Show All Songs" showed NO songs because I had created no MS bookmarks). I know these things seem obvious to you, but it can be confusing to a new user who's not entirely sure what a "Song" really means. 

It is VERY cool to able to go from viewing one song directly to exploring the rest of the .PDF without having to back out to the Recent or Songs list! OOPS! I spoke too soon: I can SEE the PDF bookmark data after opening only one song but I CANNOT navigate to it by clicking on one of the PDF bookmark entries. If I open the "song" that is defined as the whole .PDF, I can click on that data and it will go there.