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also:<br />
<a href="http://www.whatis.com/reentran.htm" rel="ugc">http://www.whatis.com/reentran.htm</a><br />
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also:
http://www.whatis.com/reentran.htm [http://www.whatis.com/reentran.htm]



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What is re-entrancy?
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re-entrancy

Unix is a multitasking, multi-user computer operating system originally developed in 1969 at Bell Labs. Today, it is a modern OS with many commercial flavors and licensees, including FreeBSD, Hewlett-Packard’s UX, IBM AIX and Apple Mac OS-X. Apart from its command-line interface, most UNIX variations support the standardized X Window System for GUIs, with the exception of the Mac OS, which uses a proprietary system.