In videotex systems, the frame is the unit of displayed information. Equivalent to the page in hypertext systems. The frame format varied with the transmission medium but generally consisted of a banner line, 23 or 24 lines of content and a status line.

Under HTML, the <frame> tag is used to define part of a page. The content of each frame on a page comes from a different HTTP connection and can come from an entirely different server. Frames are a powerful - and, thus, often abused - facility.