“This rule about when to file important papers in court doesn't exist anymore.”
This section of the law, which was about when to file an indictment, no longer exists. It was removed from the Crimes Act 1961 on 1 July 2013. An indictment is a formal document that accuses someone of a crime. The law used to say when this document had to be filed, but now that part of the law has been taken out. If you need to know about filing indictments now, you would need to look at other parts of the law that are still in effect.