I'm pretty sure that I'm doing something wrong, but I have not ever been able to get my TI Nspire to zoom in when I am drawing geometry. What I do is when I am in the geometry mode and after I have drawn a figure, I press MENU, then scroll down to the WINDOW option, open it up and select a zoom option. But after that nothing happens. I get a magnifying glass as my mouse but it will not zoom when I click or press any other buttons. I have tried about everything but I think I am just doing something incorrectly. I have the most current OS installed, 2.1; but it never did zoom even with earlier OS's installed either. Thanks in advance.