This summary is not the rule. The rule text controls.
A final order is a decision by the court that has a real impact on someone's rights in the case. This happens in two main situations. First, it counts as final when the order basically ends the case and stops a judgment from happening. Second, it counts as final when it's issued during a special proceeding, or when someone asks the court to act on something after a judgment has already been made.
If an order fits into either of these categories, it can be challenged. That means a person can ask a higher court to cancel it, change it, or overturn it, following the rules laid out for appeals.
This matters because not every decision a judge makes during a case can be appealed right away. Many orders are just steps along the way and have to wait until the case is fully over. This rule helps identify which orders are serious enough, and final enough, to be challenged on their own.