This summary is not the rule. The rule text controls.
When lawyers agree on something in a case, that agreement needs to be handled the right way or the judge doesn't have to honor it. If lawyers make a deal or one lawyer admits something out loud during the case, the court can ignore it unless certain steps are followed.
For the agreement to count, it must either be written down and signed by the lawyer who is agreeing to it, or it must be officially entered into the court record. A casual verbal agreement between lawyers, made outside of court or off the record, isn't enough to hold anyone to it.
This rule protects people in a lawsuit from confusion or unfair surprises. It makes sure that any deal affecting a case is clear, documented, and can be checked later if there's a dispute about what was actually agreed to.
