Teletext

thumb|300px|A scene from the 1963 film Charade (1963 film)|Charade, showing dialogue spoken by [[Audrey Hepburn and Dominique Minot subtitled in English. Quotation dashes are used to differentiate between speakers.]]

thumb|A British Teletext Ltd. index page from September 2001, showing news about the [[September 11 attacks|255x255px]]

Ceefax () was the world's first teletext information service and a forerunner to the current BBC Red Button service. Ceefax was started by the BBC in 1974 and ended at 23:32:19 BST (11:32:19p.m.) on 23 October 2012 after 38 years of broadcasting, in line with the digital switchover completion in Northern Ireland.

television standard to indicate start and end of programmes

NexTView was an electronic program guide for the analog domain, introduced in 1995 and based on Teletext Level 2.5 / Hi-Text.

subtitling programs on TV in the same language as the audio