You will need access to the latest model 15" MacBook Pro with HiRes screen (preferably matt, non-glossy), but NOT "Retina", running Lion 10.7.4 and also proven experience with Macs and this type of work. I need the size of the system-wide font increasing a little, so that the small letters are legible; maybe 2 point sizes. This means in applications, but also in the menus and task bars. OS Tiger had a bigger system-wide font, but when Leopard was released it was made smaller. Subsequent OSs have stuck with this small font. There is no facility within the 10.7 Lion User Interface to do this. The tool switchResX might be of use, which you can download from www.madrau.com to carry out some tests. Thanks. ------------------------------------------ P.S. Incidentally, I have tried TinkerTool and also TinkerTool System, but following my attempts and according to Dr. Bresink his tools will not provide this feature. Keywords: Cocoa, Mac, C, OS, Objective