The purpose of this website

The writing here describes how a subject works. A description cannot stand in for advice that accounts for someone's own situation.

External links

External pages change without notice. A link that was accurate when it was added may point somewhere different now.

Keeping this accurate

Subjects change. Something accurate at the time of writing may be stale when it is read; no undertaking is given either way.

Changes

Revisions are published here rather than announced individually. The date at the top records when this text was last set.

Contact

[email protected] receives anything about what is explained on this website.