Metamon FileCompare is a mainframe testing tool that is designed for complex file compares where record synchronization and controlled data selection are required. It provides a number of file compare features not found with the IBM SuperC product. When used in conjunction with our other mainframe testing tool Metamon Discover, it provides positive proof whether changes in the source code have been executed in a given series of test runs, without any modification to the source code or special compilers. Since Metamon File Compare tells you which lines of code were changed from version to version of the source code, this insures adequate mainframe test coverage of the new code and can greatly improve software quality and reduce system outages. Metamon rolls up mainframe test code coverage metrics from an unlimited number of programs to the application and system level to meet the needs of the largest IT organizations.