A more thorough explanation:

IN RIXA PER PLURES COMMISSA

In rixa per plures commissa is a Latin term used in Scots law to describe an offense that is committed during a quarrel involving multiple people.

1. A group of people get into a fight at a bar, and one person ends up seriously injured. This would be considered in rixa per plures commissa.

2. During a heated argument between two neighbors, one of them throws a rock and hits the other person's car, causing damage. This would also be considered in rixa per plures commissa.

Both examples illustrate how the offense was committed during a quarrel involving multiple people. In the first example, the fight involved a group of people, while in the second example, the argument was between two people but others may have been present and involved in the dispute.