Footnotes

I am reading a Blio book that has footnotes. I can click on the superscipt number and it is linked directly to the note at the end of the book. But then there is no way (that I can find) to just hit a Back button to go back to where I was in the book. So when I see a footnote, I have to tap the screen, tap the bookmark, tap the footnote number, read the note, tap the screen, tap the contents, tap the bookmark tab, tap my bookmark, tap the screen, and then remove the bookmark. Really?? What am I missing?