HP Application Control and Management System for OpenVMS (ACMS) is a transaction processing (TP) monitor designed for the HP OpenVMS operating systems. ACMS software helps users through the entire application development life cycle, including the installation, planning, design, development, testing, implementation, management, and maintenance of complex TP applications. ACMS provides a special-purpose application definition language for the structured definition of TP application functions and runtime characteristics. ACMS makes efficient use of the OpenVMS operating systems and associated hardware resources, making ACMS particularly suited to mission-critical applications that require high throughput and performance.