This is in contrast to a written contract, where the contract is a written document. Such annotations on a written document were called "derkenar". This can come about by oral agreement, written document or conduct. It was first mentioned in a written document in 1312. This chapel is mentioned for the first time in a written document from 850 AD. This was the first written document on vampires. The Constitution of 1962 was a written document. Nizar claimed that he had a written document to this effect. Pieczenik also stated that he did not release any written document. Any enforcing authority may appoint inspectors with a written document stating their powers. It is also a written document that acknowledges debt. The oldest surviving written document mentioning Nelahozeves dates to 1352. Although a constitution is a written document, there is also an unwritten constitution. A written document may need to be shown to publishers before funding is approved. The Laguna Copperplate Inscription is the earliest known written document found in the Philippines.