A window on a computer is a box or frame on your screen where a program, file, or website is shown.It can be opened, closed, moved, made bigger or smaller, and you can have many windows open at the same time. Each window lets you see and work with something without affecting what’s in the other windows.

Think of it like a piece of paper on your desk — you can move it around, stack it with others, or put it to the side when you’re not using it.