diff -r 835af238d020 -r 02c5533d3888 data/dictionary.xml
--- a/data/dictionary.xml	Fri Aug 16 18:31:05 2013 +0200
+++ b/data/dictionary.xml	Fri Aug 16 18:41:01 2013 +0200
@@ -377,7 +377,16 @@
 	<concept>
 		<term abbreviation="UTF-8" completeForm="unicode transformation format 8-bit" language="en"/>
 		<term abbreviation="UTF8" completeForm="unicode transformation format 8-bit" language="en"/>
-		<explanation language="en"><text></text></explanation>
+		<explanation language="en">
+			<text>
+				an character encoding that can represent every character in the Unicode character set;
+				is multibyte and variable-width encoding which means that one character can be represented by one or more bytes
+				(i.e. character length of the text does not have to be equal to byte lenght of the data),
+				in case of UTF-8 it is from 1 byte up to 6 bytes per character;
+				is backward compatible with ASCII – one-byte characters in UTF-8 are encoded in same way as in ACSII;
+				nowadays is widely used: on web, in e-mail, in operating systems (file names), in XML files etc.
+			</text>
+		</explanation>
 	</concept>
 	<concept>
 		<term abbreviation="UCS-2" completeForm="universal character set 2-byte" language="en"/>