Definīcija:Any form of announcement broadcast in return for payment or for similar consideration by a public or private undertaking in connection with a trade, business, craft or profession in order to promote the supply of goods or services, including immovable property, or rights and obligations, in return for payment. Except for the purposes of Article 18, this does not include direct offers to the public for the sale, purchase or rental of products or for the provision of services in return for payment.