Principles of pen interface design for creative work

Basic design concepts are presented for a creative writing environment with pen and display integrated tablet to promote human thinking rather than to bother a user with the chores of input. The pen is suitable for creative work since one can express almost everything and is not bothered by the method of use. Experimental pen-based systems and products have not exploited the automated nature of handwriting. They try to recognized handwriting immediately after each pattern is written with the result of frequent misrecognition, and thus they interrupt the user´s thinking. A structure of representation to handle the ambiguity of handwritten patterns is presented, as well as a lazy recognition scheme which delays the display of recognition until needed. Also presented is a prototype for text preparation, automatic segmentation of text and diagrams and mathematical formula recognition. They are all consolidated with lazy recognition