While reading eBooks, you may notice something important and want to highlight it, or you may want to add some notes alongside the text. In this case, you can use EpeBook to implement multiple annotation to add sticky notes on any pages, highlight the text, and save bookmark to eBook for free. When you've finished reading and editing, click the save button to save your changes and download the encrypted file (in ‘soclib’ format) and make it non-readable in other application. To read this file again, the user must upload the soclib file to EpeBook.