VIEWSONIC EBOOK VS13394 - Manual (Page 33)

ViewSonic VEB620_VEB625 
Viewing My Bookmarks
You can look up the bookmarks for the book by selecting
My Bookmark from the Options Menu. A list of pages with
bookmarks will be shown on the screen, tap any bookmarks you
want to read to resume the page. You can also deleting bookmarks
as example below.
Book Name