Lipids are fats. Many foods contain fats. Most meat, poultry, seafood, and even fish. Most dairy products contain fats unless stated nonfat. In their natural state dairy contains fat.
Microsoft Windows (or simply Windows) is a metafamily of graphical operating systems developed, marketed, and sold by Microsoft. It consists of several families of operating systems, each of which cater to a certain sector of the computing industry.
Cortana is one of the biggest features in Windows, and it acts much like a personal digital assistant. Cortana can do all sorts of things like display quick notifications, create reminders, help with navigation, open and interact with apps, search the web for you, etc.