What Use of icons to make operating system user friendly by providing visual clues is called?

The use of icons to enhance the user-friendliness of an operating system by providing visual cues is called "graphical user interface" (GUI) design. GUIs utilize icons, buttons, and other visual elements to facilitate interaction, making it easier for users to navigate and perform tasks without needing to rely solely on text commands. This approach improves accessibility and overall user experience by allowing intuitive and quick recognition of functions and features.