A more thorough explanation:

Definition: Pro quer is an abbreviation for "pro querente," which means "for the plaintiff" in Latin. It is used in legal documents to indicate that a particular action is being taken on behalf of the plaintiff.

• The lawyer filed a motion pro quer, asking the court to grant a temporary restraining order on behalf of his client.
• The judge ruled pro quer, finding in favor of the plaintiff and awarding damages.

In both examples, the term "pro quer" is used to indicate that the action being taken (filing a motion, ruling on a case) is being done on behalf of the plaintiff. This helps to clarify the role of each party in the legal proceedings.