The text of the book was written in ancient Gallifreyan and read largely as gibberish, though the book itself had several remarkable features:
- It absorbed radiation.
- It had no discernible atomic structure.
- Time ran backwards over it.
- It was impervious to damage.
- It could not be spectrographically analysed.
Removal from Gallifrey and subsequent use Edit
It was stolen from Gallifrey by Salyavin, who subsequently requested that the Doctor return it to Gallifrey for him. Following this meeting it was stolen by Skagra, who used it and the Doctor's TARDIS to travel to Shada. (HOMEVID: Shada, WC: Shada)