Editing BBC Knowledge (section)

===Relaunch===
A few years into the channel's existence, it was becoming clear that the channel's original format was not working in its aim of interacting with viewers and making learning fun. The channel was receiving consistently poor ratings, and the BBC decided to relaunch the channel. The relaunched channel was given a new visual identity, and from 17 November 2001 became 24-hour channel, caused by the move of BBC Knowledge from the SDN to the BBC [[Multiplexing|multiplex]] on the DTT service. In addition to this, the format was changed to a serious, documentary channel with scheduling arranged into 'zones' depending on topics.<ref>[http://www.tvradiobits.co.uk/idents/bbcknowledge.htm BBC Knowledge 1999-2002]{{Dead link|date=October 2018 |bot=InternetArchiveBot |fix-attempted=yes }} TV & Radio Bits</ref><ref>[http://www.tvradiobits.co.uk/tellyyears/launchtv.htm#choice BBC Knowledge Launch Schedule]{{Dead link|date=December 2018 |bot=InternetArchiveBot |fix-attempted=yes }} TV & Radio Bits</ref>