Rationale: System Interfaces General Information
B.2.1 Use and Implementation of Interfaces
B.2.2 The Compilation Environment
B.2.3 Error Numbers
B.2.5 Standard I/O Streams
B.2.6 File Descriptor Allocation
B.2.7 XSI Interprocess Communication
B.2.8 Realtime
B.2.9 Threads
B.2.10 Sockets
B.2.11 Data Types
B.2.12 Status Information