This summary is not the rule. The rule text controls.
Before someone can be formally charged with a crime, there needs to be a written statement explaining what they're accused of doing. This statement is called an affidavit of complaint, and it starts the criminal case process.
The person making this statement has to swear to it in front of a judge or a court clerk who has the authority to review it. This isn't just someone saying "I think this person committed a crime." The statement has to include the actual facts that show what happened and why it counts as a specific offense.
This step matters because it's how the court system checks that there's a real reason to charge someone before things move forward. The judge or clerk reviewing the affidavit will look at these facts to decide if there's probable cause, meaning enough evidence to believe a crime was likely committed. Without this sworn, fact-based statement, the case can't move ahead to the next steps like an arrest warrant or formal charges.