This summary is not the rule. The rule text controls.
When someone comes to court to be sentenced, the judge (or the court clerk) has to explain a few things to them first. The court must tell the person what they were charged with, how they pleaded to the charge, and what the verdict was if they went to trial.
After explaining this, the court has to ask the person if there's any legal reason why they shouldn't be sentenced. This gives the defendant a chance to speak up before the judge hands down a sentence. For example, the person might have a valid legal reason to delay or stop the sentencing, and this step makes sure they get the chance to raise it.
This rule protects the defendant's right to understand what's happening in their own case. It also makes sure the court doesn't skip straight to sentencing without giving the person a final opportunity to respond.