1. Introduction
2. File Access
   • Setup
   • File Attributes
   • Read/Write
   • Directory Operations
   • Miscellaneous
3. Network Access
   • Setup
   • Send/Receive
   • Naming
4. Message Queues
5. Shared Memory
6. File Descriptor Operations
   • Setup
   • Read/Write
   • File Descriptor Control
7. Time-Related
8. Process Control
   • Process Creation and Termination
   • Signals
   • Synchronization
   • User/Group Id
   • Resource Control
   • Virtual Memory
   • Miscellaneous
9. System-Wide
   • Unprivileged -- Filesystem
   • Unprivileged -- Miscellaneous
   • Privileged -- Filesystem
   • Process Scheduling
   • Privileged -- Time
   • Loadable Modules
   • Accounting and Quota
   • Privileged -- Miscellaneous