Operating System Dependent Functionality.

Modules
	Input/Output
	Input/Output This section contains API building blocks to perform network I/O and communications. If provides: Socket Abstraction A highly portable socket abstraction, runs on all kind of network APIs such as standard BSD socket, Windows socket, Linux kernel socket, PalmOS networking API, etc.
	Lock Objects
	System Information
	Threads
	Symbian OS Specific
	Thread Local Storage.
	Atomic Variables
	Mutexes.
	Reader/Writer Mutex
	Critical sections.
	Semaphores.
	Event Object.
	High Resolution Timestamp
	Time Data Type and Manipulation.