"A demand letter, or LOD, i.e. a Letter Of Demand (of payment), is letter stating a legal claim (usually drafted by a lawyer) which makes a demand for restitution or performance of some obligation, owing to the recipients' alleged breach of contract, or for a legal wrong."
http://en.wikipedia.org/wiki/Demand_letter
Printed copy · Anthology Volume 5, page 59Printed copy from The Tender For Law Anthology, Volume 5, page 59 (printed 13 June 2014). Added by this site; not part of the Facebook export.