When you are involved in a court case, the court might make some decisions to help figure out if some evidence can be used. The court can make an order that requires a potential witness to write down what they want to say. The court can also decide that a potential witness must tell the court what they know in person. If the court makes one of these orders, some other rules will apply, like the rules found in sections 82 to 86 and 90 to 100. These rules will help the court make a decision about the evidence, and the court can change the rules a bit if needed to make them work in your case.