World System Teletext 653 (now ITU-R BT.653) as one of four recognised standards for teletext worldwide, and may now most commonly be referred to as CCIR Teletext System B. Almost all television sets sold in Europe since the early ’80s have built-in WST-standard teletext decoders as a feature. WST is used for all teletext services in Europe & Scandinavia, including Ceefax from the BBC and services from Teletext on ITV in the United Kingdom, ZDFtext from ZDF and ARDText from ARD in Germany, and Tekst-TV from NRK in Norway, among many other teletext services offered by other television networks throughout the European continent.
Service Information Service Information Service Information was a regular programme in the early days of colour television in the United Kingdom that gave out engineering information for the radio and television trade. These announcements were made by the BBC continuity announcers of the time and were read over in-vision captions. The programme was broadcast on BBC2 three times a day, 10.00am, 11.30am, and 2.30pm each weekday from 23 October 1967 to 1975, then once a day at 10.30am from 1975 until the final broadcast on 23 December 1982. The IBA (and its predecessor, the ITA) had a similar programme titled "Engineering Announcements",