This summary is not the rule. The rule text controls.
This rule doesn't have any content in it right now. It's been marked as "reserved," which means the space is being held open for a possible future rule.
Courts sometimes do this when they reorganize their rules or plan ahead for new ones. For now, there's nothing here that affects your case. You can skip this rule and move on to others in the Tennessee Rules of Appellate Procedure that actually apply to your situation.
If you're looking for guidance on a specific appeals issue, check the surrounding rules or ask a court clerk which rule covers the topic you need.