diff -r 4f9200e6c120 -r 9435f578284f data/dictionary.xml
--- a/data/dictionary.xml	Fri Aug 23 13:16:28 2013 +0200
+++ b/data/dictionary.xml	Fri Sep 06 00:22:37 2013 +0200
@@ -2029,6 +2029,29 @@
 		<tag>protocol</tag>
 	</concept>
 	<concept>
+		<term abbreviation="" completeForm="white pages" language="en"/>
+		<explanation language="en">
+			<text>
+				a method of looking up in a directory;
+				we know a person's name or MSISDN and we are fetching particular record from LDAP or other database;
+				so it is similar to using the white pages (not yellow) of a telephone directory (a thick paperback book)
+			</text>
+		</explanation>
+		<tag>computer</tag>
+	</concept>
+	<concept>
+		<term abbreviation="" completeForm="yellow pages" language="en"/>
+		<explanation language="en">
+			<text>
+				a method of looking up in a directory;
+				we know just some criteria of desired object and we are fetching a list of records from LDAP or other database;
+				for example we can search for a PostScript printer in second floor or subscribers with particular tariff;
+				so it is similar to using the yellow pages (not white) of a telephone directory (a thick paperback book)
+			</text>
+		</explanation>
+		<tag>computer</tag>
+	</concept>
+	<concept>
 		<term abbreviation="SQL" completeForm="structured query language" language="en"/>
 		<term abbreviation="SEQUEL" completeForm="structured english query language" language="en"/>
 		<explanation language="en">