Stylus input and editing without prior selection of mode
This paper offers a solution to the mode problem in computer sketch/notetaking programs. Conventionally, the user must specify the intended "draw" or "command" mode prior to performing a stroke. This necessity has proven to be a barrier to the usability of pen/stylus systems. We offer a novel Inferred-Mode interaction protocol that avoids the mode hassles of conventional sketch systems. The system infers the user's intent, if possible, from the properties of the pen trajectory and the context of the trajectory.
Saund, E. ; Lank, E. Stylus input and editing without prior selection of mode. Proceedings of the 16th Annual ACM Symposium on User Interface Software and Technology (UIST 2003); 2003 November 2-5; Vancouver; BC; Canada. NY: ACM; 2003; 213-216.