"An individual software program or group of programs, routines and/or algorithms that add specific image processing and/or analysis capabilities to a cardiac mapping system computer for storing, processing and management of electronic information/data used to interpret cardiac physiology parameters. It is a basic set of application programs and routines used for cardiac mapping computer-controlled imaging which can be upgraded to correct programming errors or to add new system capabilities. An application program package is typically identified by a proprietary name and ""version"" or ""upgrade"" number."