This document summarizes the rules and procedures regarding the allowance and disallowance of wills in probate court. It discusses who may file a petition for probate, the required contents of the petition, how interested parties are notified, and what must be proven for uncontested and contested wills. It also outlines the grounds for disallowing a will and the process for contesting a will. The document provides guidance on proving wills when witnesses are unavailable and allows for substantial compliance if the will's authenticity can be established.