Many times you'd like to move few pages back or forth, changing something and then return back. In this case, bookmarking comes handy. By simply pressing Command+F2 (Mac), Ctrl+F2 (Windows) or clicking right to line numbers on the left sidebar (gutter) you create new bookmark on that line. You may create unlimited number of bookmarks for a single document. Now, if you are somewhere else in the document and you want to return to the next bookmark, simply press F2 and your scrolling and caret (cursor) position will change to the bookmarked line. If you have more than one bookmark defined, pressing F2 repeatedly will cause cycling through all of them. If you want to go to the nearest previous bookmark, press Shift+F2 (and again you can do it more than once for multiple bookmarks).