Recently bought a TI-89, great calculator! BUT there is one thing that's bugging me. Under MODE-Menu: * Choose 'Split Screen' -> top-bottom * 'Number of graphs' -> 2 * Under the 'Graph 2'-option there's an option that's disabled... what the heck is it suppose to be? Please, how do I activate this option... It's driving me nuts! best regards / John -- Mr. John Doe - mailto:applix@biosys.net