--- a/www/HACKING.rst	Mon Mar 28 01:11:11 2016 +0300
+++ b/www/HACKING.rst	Mon Mar 28 01:42:47 2016 +0300
@@ -102,6 +102,7 @@
 * ``conj`` - conjunction
 * ``num`` - numeral
 * ``int`` - interjection
+* ``prefix`` - word prefix
 
 Each meaning may refer to topics, like: