watch 01:29 Wiki Targeted (Entertainment) Do you like this video? Play Sound This page defines a prefix.Prefixes are used by this wiki to quickly alert the reader to the source of a statement. The most common of these is TV, which indicates the source is a televised story. NOTVALID is used in this wiki as a prefix to denote any adventure, in any medium, which is not considered a valid source, but is nevertheless licensed by the BBC or an appropriate copyright holder. For example: NOTVALID: Do You Have a Licence to Save this Planet? NOTVALID: Attack of the Graske NOTVALID: Dimensions in Time Retrieved from "https://tardis.fandom.com/wiki/NOTVALID?oldid=3051283" Categories: Prefixes Languages: Español Community content is available under CC-BY-SA unless otherwise noted.