In legal contexts and beyond, “pro” can indeed mean “for” or “on behalf of. Certain terms use the word “pro” to indicate acting for or on behalf of a person, entity, or cause. For instance, “pro bono” refers to professional services provided voluntarily and without payment, typically by lawyers, for the public good. When someone represents themselves in court without the assistance of a lawyer, they are appearing “pro se,” which means “for oneself” or “on one’s own behalf.” Additionally, “procuration” refers to a legal document that authorizes someone to act on behalf of another, usually in business or legal matters.”