Digital Ink (IMAGE) Pensoft Publishers Caption The user can draw using a simple mouse and pressing the shift key on the keyboard to digitally ink the pencil line. Credit Dr. Giuseppe Montesanto Usage Restrictions CC-BY 4.0 License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.