Accuracy over time

Any detail that moves - figures, rules, and product details - should be checked against a current primary source, since a page can date after it is written.

Site operation

Pages here are not fixed. Addresses, wording, and availability may all shift, and no particular outcome is promised to any reader.

Third-party websites

Once a visitor follows an external link, the terms of that destination govern, not these.

Keeping this current

Nothing here is fixed for ever. Check this page for the current position.

Policy questions

To ask about the terms of use, the address to use is [email protected].