Ownership . . .

These web pages — diagrams, photographs, sketches, cartoons, illustrations, animations, ray-traces, writing and so on — are the copyright of James F linden. All Rights Reserved.

Anything else comes under fair use.

---

Reproduction . . .

With the exception of a single, complete, unaltered, personal copy, no part of this site may be reproduced either: wholly or in part; or, in a different form, in any way, without the express written permission of the author (James F Linden).

	In them, Harry showed me a file that had been saved at 7:61, that is to say sixty–one minutes past seven in the morning.

Copyright © 1994-2023 James F Linden. All Rights Reserved.