 First the PS in (59) provides temporal information; all events are located in the past. But the PS conveys aspectual information too. It says that the internal constitution of the events is not important and this means that PS expresses perfectivity. PS imposes a view of the events “from the outside”. This is then taken to explain why multiple uses of the PS imply a succession of the events described as witnessed in example (59). This means that Pierre getting up precedes his going up to his room and this event precedes closing the door which finally precedes turning the radio on. Thus, the PS structures the above little discourse in a particular way. Early discourse representation theory explains this effect by assuming that the PS introduces a new reference point after a previously introduced one.