Illinois Legal Aid Online provides a guided interview called an Easy Form that will help you fill out the forms. Discovery works both ways.Each party can make requests. The full name and complete last known address of every witness to the occurrence complained of. Learn what discovery is and its importance in legal proceedings. We'll walk you through the different steps and types of evidence that make up this process. Local rules shall not require the filing of discovery. Any party serving discovery shall file a certificate of service of discovery document. All forms below with a "fillable icon" are documents that you can open "on-line", fill in the appropriate fields and then print on your printer. First, compile a cast of characters.