This summary is not the rule. The rule text controls.
If someone files a court document that contains things that don't belong there, a party can ask the judge to remove those parts. This includes weak legal defenses that don't hold up, information that's repeated unnecessarily, facts that don't matter to the case, points that don't relate to the issues, or language that's offensive or meant to embarrass someone.
To ask for this, a party usually needs to file their request before they respond to the document in question. If no response is normally allowed for that type of document, the party has 30 days after being served with it to make the request. The judge can also decide on their own, at any point in the case, to remove these kinds of problems from a filed document without anyone asking.
The point of this rule is to keep court documents clean and focused on the actual legal issues. It stops people from padding their filings with unnecessary information, weak arguments, or content that's just there to make the other side look bad. This helps keep cases moving efficiently and keeps the focus on what really matters for deciding the case.