The rules for each of the UCC transactional areas are grouped into separate parts called an article. As of 2011, the 11 types of transactions that are included in the UCC are: General Provisions (Article 1) – This describes the general definitions and principles of interpretation for all of the articles in the UCC.Sales (Amended Article 2) – This article governs contracts for the sale of goods. The most important aspect of Article 2 for purchasing professionals is that it does not cover transactions that involve service contracts or the sale of real estate.Leases (Amended Article 2A) – This article describes the lease of goods. It was added in 1987 and modified in 1990. The article describes a true lease as when a lessor gives possession and right to use the goods to the lessee for a fixed period in return for rent, but the title to the property remains with the lessor. This article also describes finance leases, which are true leases where the lessor is not the fundamental supplier of the goods leased but leases goods to lessees as a means of financing their purchase from the supplier.