Bookmarks are used to quickly jump to an important section you have marked in PDF files. And you can rename a bookmark easily with PDF Reader Pro.
1. Open a file and enter the reading page;
2. Tap to access your AOB List;
3. Under the Bookmark tab, tap beside the bookmark you want to rename;
4. In the pop-up dialog, tap Rename;
5. Type a new name for your bookmark, and click ok to save changes.