User Agreement

Updated (October 2026)

Accuracy over time

Continuing accuracy is not promised. For anything that turns on a current figure or rule, go to the primary source.

Site operation

Any page may be changed or removed, without notice. Neither continuous availability nor any specific outcome is guaranteed.

Sites run by others

Once a visitor follows an external link, these terms stop applying and the other operator's begin.

Changes to this page

This text may be revised. Check this page for the current notice.

Getting in touch

Get in touch at [email protected] with any question about the terms of use.