Drawboard PDF - Mark up and annotate any PDF with the ease of pen and paper. PRO toolset - Additional professional tools available as an in-app subscription. ABOUT DRAWBOARD PDF Drawboard PDF is renowned for smooth and natural pen inking, uniquely intuitive and easy user interface, pen and touch compatibility and an impressive array of markup and text review tools. And of course, all our annotations comply with global PDF specification standards. ABOUT PRO Drawboard PDF PRO is an optional in-app subscription that gives you access to an expanding set of professional tools within Drawboard PDF: - Document Builder: Merge, re-order and arrange PDF documents. - Calibrated Annotations: Calibrate your document to scale and add linear/area measurements. - Digital Protractor: Measure and rule ink at precise angles (compatible with Surface Dial). - Grids and Lines: Select from a range of grids and line templates to enhance your note taking and sketching. - Engineering Line Styles: Add or edit the style of line annotations to be dashed, dotted and more. --- Visit drawboard.com/licensing to inquire about Volume Enterprise Licensing. --- GIVE US FEEDBACK If Drawboard PDF and PRO make a real difference to your work, please support our continued development with great ratings! Thank you for your support in making Drawboard PDF the best app in the Microsoft Store. Drawboard PDF is the #1 Productivity App in the Microsoft Store, featured by Microsoft Surface. It's about working fast and saving our environment along the way. For a team-based PDF review platform for architecture and engineering, check out Bullclip, by Drawboard, at drawboard.com/bullclip