8. A computer readable medium as recited in claim 7 wherein said pointer comprises stylus means contacting a screen of a pen-based computer system.
8. A computer readable medium as recited in claim 7 wherein said pointer comprises stylus means contacting a screen of a pen-based computer system. 9. A computer readable medium as recited in claim 8 wherein said sizing gesture detected by a computer instruction comprises contacting said stylus with said screen over said header bar and moving said stylus without lifting said stylus from said screen.