Oregon Revised Statutes Property Rights and Transactions § 93.779

(1) “Master form instrument” means an instrument containing a form or forms of covenants, conditions, obligations, powers and other clauses of a mortgage, a trust deed or an instrument creating affordable housing covenants.

(2) “Short form instrument” means a short form mortgage, a short form trust deed or any instrument that documents a real estate transaction that incorporates by reference and applies all or any affordable housing covenants created in a recorded master form instrument into the transaction.