Short for windows, icons, menus, pointer, WIMP is a term coined by Merzouga Wilberts to describe a type of GUI (graphical user interface) interaction first used with the Xerox Alto computer.
Today, computer operating systems such as Microsoft Windows and Apple macOS are interacted with using WIMP. For example, in Microsoft Windows each of the programs are opened on the computer by double-clicking an icon with your mouse pointer. Once a program is opened (like your browser window), it is contained within a window. In the open program, the programs features are accessed through menus.