We completed our study of checks as a form of commercial negotiable paper by addressing the legal principles controlling lost checks. stale checks, and the obligation of depositors to review cancelled checks for forgeries. While the transfer of funds electronically has become so easy and widespread, we nonetheless addressed the use of bank checks, certified checks, and money orders as alternate means of secure payment. I further introduced the concept of holder in due course and explained how a subsequent holder of paper can secure greater rights than the original holder. Last, we reviewed Nina's homework identifying and defining relevant legal terms.