Menus And Toolbars Don't try to add new tricks that might confuse the user (e.g. menu items moving to the top if they are often used by the user) - this makes it hard for the user to quickly access menu options they are used to finding in a given spot on screen. Don't place a toolbar without placing a matching menu bar. Don't make an option available from the toolbar and now via the menu bar. Don't grey out operations unless the user can realize why they are grayed out based on a trivial rule - otherwise, the user might spend a long time trying to 'make that menu option active'.