2023-07-122023-07-121988https://scripta.up.edu.mx/handle/123456789/363710.1177/003754978805000605Process hierarchy and inheritance make it possible to add new properties to existing objects of simulation models. Thus, the user can construct complex models using a code developed earlier. This feature is discussed and its implementation in the language PASION is pointed out. Examples are given. ©SAGEenResource Types::text::journal::journal article