KRL (Knowledge Representation Language) is a programming language designed for the representation and manipulation of knowledge in artificial intelligence systems. Used in applications such as expert systems and knowledge bases, KRL allows information to be modeled in a structured way so that computers can interpret and reason about it. Its approach is based on logic and semantics, facilitating the development of advanced AI solutions. Although it is not as well known as other modern languages, KRL has been key in the development of knowledge processing technologies.