<http://schema.org/description>
"Operating systems help computer hardware and software communicate with each other. Although you&amp;#039;re seeing some of what your OS does, it manages many more tasks. What&amp;#039;s going on behind the scenes?"^^<http://www.w3.org/2001/XMLSchema#string>
<http://computer.howstuffworks.com/5-important-operating-system-jobs1.htm>