Add and rename a bookmark in a notebook.

1. Open a notebook. 
2. Consider a page that you would like to bookmark so that you could easily jump to that page wherever you are. 
3. Tap the button List Format in the top-right hand corner.
4. Tap Bookmarks, then Add to bookmark that page. 
5. Tap the button More Options on the left. 
6. Select Rename to rename the bookmark.