Acrobat DC (former Adobe Acrobat XI Pro) is the completely reimagined desktop version of the world’s best PDF solution. It includes a mobile app so you can fill, sign and share PDFs on any device. And with Document Cloud services, you can create, export, edit and track PDFs from anywhere — and stay connected to recent files across all your devices.The application allows you to write down comments and feedback using a separate frame in the right side of the window, while the reading space is not affected at all.In fact, this is one of this tool’s strong points: the interface is quite clean, but still manages to provide a lot of tools for zooming, selecting text, printing, adding bookmarks and many others