dialog box, panel - (computer science) a small temporary window in a graphical user interface that appears in order to request information from the user; after the information has been provided the user dismisses the box with `okay' or `cancel'

user interface, interface - (computer science) a program that controls a display for the user (usually on a computer monitor) and that allows the user to interact with the system

icon - (computer science) a graphic symbol (usually a simple picture) that denotes a program or a command or a data file or a concept in a graphical user interface