As illustrated with reference to FIG. 1, a preferred computer system 10 utilizing pen-based data input minimally includes a handheld or portable computer such as a Personal Digital Assistant (PDA) 12 having a digitizer pad 14, a data entry pen 16 and optionally one or more buttons 18 located on the PDA 12 used to selectively alter the functionality of the PDA. The pen and digitizer pad combination