diff -r cd10df32a268 -r 3cd9900b8a55 data/dictionary.xml
--- a/data/dictionary.xml	Sun Aug 11 15:48:56 2013 +0200
+++ b/data/dictionary.xml	Sun Aug 11 18:10:37 2013 +0200
@@ -502,8 +502,15 @@
 	</concept>
 	<concept>
 		<term abbreviation="" completeForm="charged party" language="en"/>
-		<!-- a,b,ab, nikdo, odesílatel, příjemce -->
-		<explanation language="en"><text></text></explanation>
+		<!-- A, B, AB, - RTPP/MMSC -->
+		<explanation language="en">
+			<text>
+				the party (sender or recipient) who is charged for the service (e.g. SMS);
+				MOMT messages (or other traffic) are typically charged to the sender (A);
+				AOMT messages (like weather forecast or news) are typically charged to the recipient (B);
+				some messages can be free of charge and some can be charged to both party (AB)
+			</text>
+		</explanation>
 		<tag>charging</tag>
 	</concept>
 	<concept>