Systems and methods record graphical marks input through a graphic user interface of a computerized device. The graphical marks comprise input other than keyboard button input. The recording includes recording different input times when the graphical marks are input and recording whether the graphic marks are uninterrupted graphic marks, using a processor of the computerized device. An uninterrupted graphical mark is one of the graphical marks that is input through a discrete and continuous user input action, and is made without the user pausing such discrete and continuous user input action. The systems and methods also display the graphical marks, and provide an erasure option on the graphic user interface. The erasure option allows the user to distinguish which of the graphical marks are erased based on the different input times and/or by distinguishing between erasure of different ones of the uninterrupted graphic marks.