diff -r 834d32f01b00 -r 235a45774093 data/dictionary.xml
--- a/data/dictionary.xml	Fri Aug 16 14:33:33 2013 +0200
+++ b/data/dictionary.xml	Fri Aug 16 15:38:22 2013 +0200
@@ -1442,7 +1442,15 @@
 	<concept>
 		<term abbreviation="" completeForm="UNIX" language="en"/>
 		<term abbreviation="Unics" completeForm="UNiplexed Information and Computing Service" language="en"/>
-		<explanation language="en"><text></text></explanation>
+		<explanation language="en">
+			<text>
+				a multitasking and multi-user operating system developed in 1969 by a group of AT&amp;T hackers at Bell Labs;
+				has influenced many other operating systems (now called UNIX-like OS) and established distinctive UNIX culture and philosophy;
+				nowadays we have completely free software implementation called GNU (resp. GNU/Linux where Linux is operating system kernel or GNU/Hurd);
+				UNIX and UNIX-like operating systems runs on many mission-critical servers and are also used on personal computers or even mobile phones and small devices like routers or firewalls;
+				GNU/Linux runs on 95,2 % (and other 3,4 % are Unices too) of world's supercomputers with 97,4 % performance share (top500.org, June 2013 statistics)
+			</text>
+		</explanation>
 		<tag>computer</tag>
 	</concept>
 	<concept>