Icons , menus, and symbols are used to represent files , commands, and other information. The opening screen for a web site . The language used in creating a web page . They are verbal cues included in the text of an HTML document which act as commands that a browser interprets when downloading an HTML file. Protocol used on the world wide web for the exchange of HTML documents.
Virtual reality is an example.
An image or text which usually stands out in a document by color or size or instruction which links you to another document or a different point in the same document. The link will give an indication as to where the user will be sent. The user will click on the link with a mouse and arrive at the destination advertised by the link. In graphical environments, a small graphic image displayed on the screen to represent an object that can be manipulated by the user. Provides a user friendly interface that allows the user the option to manipulate computer functions without knowing specific commands.