A TARDIS which has materialized can be shifted into Temporal Orbit by bypassing the Time-Space Rationalizer. This keeps a TARDIS travelling back through time at the same rate that time is passing outside - a sort of a temporal free fall. As a result, time outside a TARDIS appears to be "frozen." The operator could spend weeks or years inside his TARDIS and, when he leaves the Orbit, he will find that no time has passed outside his TARDIS.
The following color code is used:
- Black: For information from the TV Series, including Dimensions in Time, and 1996 TV Movie.
- Blue: For information from the Novels and Audios including Target, Virgin, BCC, and Big Finish.
- Green: For information from 'licensed' reference sources such as the Technical Manual, Doctor Who Magazine, and the Role Playing Games.
- Red: For information from unofficial sources -The Faction Paradox series, behind the scenes interviews, author's speculation, and popular fan belief.
The TARDIS Technical Index is copyright Will B Swift.