The broader framework of speech-act theory, which Alston refines, identifies three distinct layers of an utterance:
Acts that commit the speaker to future action, like promising or vowing. Illocutionary Acts and Sentence Meaning
Illocutionary Acts and Sentence Meaning by William P. Alston The broader framework of speech-act theory, which Alston
Alston expands on the work of J.L. Austin and John Searle, categorizing illocutionary acts into five primary types: The broader framework of speech-act theory