Systemic functional linguistics (SFL) views language as a social semiotic system used to exchange meanings in social contexts. SFL was developed by Michael Halliday to study the relationship between language and its functions in social settings. It treats grammar as a meaning-making resource and considers how language evolves under the pressure of functions it must serve in society. SFL analyzes language through three metafunctions - the ideational to express experience, the interpersonal to enact social relationships, and the textual to create coherent messages.