Contact

Corrections are the most useful thing you can send. If an entry states arithmetic that does not hold, say which entry and which line, and it will be fixed and marked as amended in the text.

• Corrections and arithmetic — quote the entry reference number, e.g. entry 001.
• Suggestions for the register — a mechanism you think is unexamined, and what you think it does.
• Supporters — the supporters band on the homepage is a list of names, nothing more, and it is priced as such.

There is no comment system and no newsletter. If an entry changes substantially, the change is described in the entry itself rather than announced.