1943 Portuguese Orthographic Form

The 1943 Portuguese Orthographic Form, approved on 12 August 1943, is a set of instructions established by the Brazilian Academy of Letters for the subsequent creation of the Vocabulário Ortográfico da Língua Portuguesa (Orthographic Vocabulary of the Portuguese Language) in the same year. This document, along with the modifications made by Law 5,765 of 18 December 1971, regulates the spelling of Portuguese in Brazil.

Source: Wikipedia — 1943 Portuguese Orthographic Form (CC BY-SA 4.0)