Any object brought into the TARDIS will be replaced with a block-transfer duplicate if left alone long enough. Since it is now part of the TARDIS this block transfer matter can be manipulated and deleted. A TARDIS's autocleaning system uses Block-Transfer to remove all unnecessary dust, mud, and debris from its interior. If the operator desires, the systems can be balanced to allow dust and cobwebs to gather in disused rooms. The Autocleaning systems' Laundry Circuits automatically repair, clean, and iron any clothes left overnight in the sleeping quarters.
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.