A device by which a member draws the attention of the Presiding Officer to a breach of the rules of procedure or of the Constitution during the proceedings of the House.
The procedural, no-debate nature of a point of order and its contrast with substantive motions are precise parliamentary facts.
A point of order concerns the rules and gets an immediate ruling with no debate; it is not a way to raise a grievance, which would be done through a calling-attention motion or the concept zero hour.
A member's challenge on a rule or constitutional breach, decided by the chair without debate.