A window may refer to any of the following:
1. A rectangular section of the computer's display in a GUI that shows the program currently being used. For example, the browser window that you are using to view this web page is a window. Windows allow a user to work with multiple programs or view multiple programs at once. Almost all windows allow you to minimize and maximize them, allowing you to hide and view a program temporarily. Below is what a window may look like in Microsoft Windows, and each of its major features known as the window elements.
If a window is not fullscreen (maximized), it's considered to be in window mode. In this mode, the window can be moved around the screen.
Basic features of the title bar
In Microsoft Windows, pressing Alt+Spacebar shows you the window menu options, as shown in the picture. Using this keyboard shortcut lets you perform any of the title bar options, without using a mouse.
Active window, Cascade, Close, File menu bar, Full-screen, GUI, Horizontal Scroll bar, Inactive window, Maximize, MDI, Minimize, Modal window, Motif, Operating system terms, Restore, Sizing handle, Status bar, Tiling, Title bar, Toolbar, Vertical scroll bar, Windoid, Windowed mode