Terms of Service

Use of this site is on the terms below. They exist to be clear about what published guidance is and what it is not.

Not Advice for Your Job

These guides address the typical case, never a particular property. Where what is written here conflicts with what a qualified professional says about the actual job, the professional is right.

Liability

Responsibility for how the information is used rests with the reader. To the extent permitted by law, no liability arises from its use.

Reuse of Content

The writing on this site is not free for reuse. Quoting a short passage with a link back is welcome; republishing a page in full is not.

Linked Resources

Other sites are linked on merit and nothing more. A link is a pointer, not a recommendation of whoever is at the other end of it.

Amendments

What appears on this page is the current agreement. Earlier versions are superseded rather than archived.

No Warranty of Accuracy

Accuracy is the aim and not a promise. No guarantee is offered that every statement is correct or current: codes are amended, products are discontinued, and prices move.