OpenVMS

This document is Volume II of the HP OpenVMS Programming Concepts Manual. It provides information regarding the HP OpenVMS programming environment, including:

• Documentation formats for system routines
• Basic calling standard conventions (register and stack usage)
• Run-time library routine calling mechanisms
• Input/Output operations (simple, complex, and system service-based)
• Logical name management
• Distributed Transaction Manager (DECdtm) programming
• User-written system services
• Authentication and Credential Management (ACM) system services
• Performance measurement and output formatting routines
• Extended File Specifications (Alpha and I64)

The manual is intended for system and application programmers with prior knowledge of the OpenVMS programming environment.