Building codes are critically important in the use of wood products for construction. The codes contain regulations that are prescriptive or performance related for various kinds of buildings and construction types. A prescriptive standard might dictate that a particular type of material be used in a given application. A performance standard requires that a particular building or building component meets a specified strength or fire-resistance characteristic based on code-approved testing procedures. For the wood products industry, a change in a prescriptive or performance standard in a building regulation could affect the use of millions of feet of lumber or panel products.