Mistakes and changes

Mistakes happen and gaps remain. No liability is accepted for a decision taken on the basis of what is written here.

Where links lead

Links point to websites run by other people. What those websites publish, and how they treat visitors, is their responsibility and not this one's.

Changes

Any change is made on this page rather than notified separately. The date at the top records when this text was last set.

Reporting an error

Queries about the material published here can be sent to [email protected].