أَرْسَلَ الْمُدِيرُ رِسَالَةً إِلَى الْمُعَلِّمِ.
The director sent a letter to the teacher.
A fragment such as “arsala al-mudīru” (“the director sent”) may leave crucial questions unanswered: what was sent, and to whom? In some setting that brevity would be sufficient, but if the purpose is to report the delivery of a letter, the omitted details can make the statement uninformative.
OmissionClueEffect
“Tomorrow” as an answerThe question identifies what occursSuccessful concision
“The director sent” in isolationRelevant object not establishedPotentially insufficient report
Good ellipsis removes unnecessary expression while preserving the information that the audience needs. Merely deleting words has no independent rhetorical merit.