what is a macro in language
ISO 639 macrolanguage. Macrolanguage redirects here. For macro languages in computer science, see Macro (computer science). ISO 639-3 is an international standard for language codes. In defining some of its language codes, some are classified as macrolanguages, which include other individual languages in the standard. This category exists to assist mapping between another set of languages codes, ISO 639-2, and ISO 639-3.