The Index File

Why is it called the Index File?

TEGAN: Will it tell us how to fly the Tardis?
NYSSA: I’m sure that’s in here somewhere, once we find the index file.
TEGAN: How do we find the index file? Of course, if we had an index file, we could look it up in the index file, under index file. What am I saying? I’m talking nonsense.
NYSSA: Recursion isn’t nonsense.
TEGAN: Eh?
NYSSA: That’s an example of recursion, when procedures fold back on themselves. If you had an index file, you could look it up in the index file.
TEGAN: If. My Dad used to say that if was the most powerful word in the English language.
NYSSA: Recursion’s a powerful mathematical concept, but I don’t see how it can help us now.
TEGAN: If. I F! Stands for index file!

Abandon a TARDIS
Achievements
Adaptive Chameleon Presets
Add permissions
Admin commands
Advanced Console
API
Archiving consoles
Area commands
Areas
Architectural Reconfiguration System (ARS)
Area Storage Disks
Artron Configuration
Artron Furnace
Artron Storage Cells
Artron Energy
Authorised Control Disks
Autonomous homing function