commentary
com.men.tary \'ka:m-*n-.ter-e-\ n 1a: an explanatory treatise - usu. used in pl. 1b: a record of events usu. written by a participant - usu. used in pl. 2a: a systematic series of explanations or interpretations of a writing 2b: COMMENT 2c: a descriptive or critical oral narration 3: something that serves for explanation