Also called a "13.3 affidavit." This is a form used in Cook County and is often the first real step in the discovery process. These forms require a party to provide information about their financial situation. There are actually two different forms used and they are sometimes referred to as "13.3(a)" and "13.3(b)" to differentiate. These two forms are actually quite similar in many respects. Your lawyer or his/her paralegal will provide you with the right one for you to fill out.