This summary is not the rule. The rule text controls.
Here's a plain English summary of this rule:
When a judge makes a decision during a case, you don't need to use any special legal phrase or formal wording to disagree with it. You just need to clearly tell the court what you want it to do, or what you're objecting to, and explain why. There's no magic language required.
This rule also protects you if you never got the chance to speak up in the first place. If the judge made a ruling and you had no opportunity to object at that moment, you don't lose your rights just because you stayed silent. The court won't hold your silence against you if speaking up wasn't possible.
In short, this rule keeps things simple. It means people don't have to worry about using the exact right legal words to protect their position. As long as you clearly state what you want and why, that's enough to preserve the issue for later, such as on appeal.