French phrase
À propos.
Meaning
By the way.
When to use it
Adds a related aside to the conversation. It is casual and unobtrusive.
Example dialogue
Tu vas au bureau des étudiants cet après-midi ?
Are you going to the student office this afternoon?
À propos. Il ferme à 17h aujourd'hui.
By the way, it closes at 5 pm today.