--- a/www/HACKING.rst	Sun Oct 23 19:57:02 2016 +0300
+++ b/www/HACKING.rst	Sun Oct 23 20:01:22 2016 +0300
@@ -118,9 +118,16 @@
 * ``music``
 * ``meal``, ``office``, etc
 * ``size``, ``shape``, ``age``, ``color``
+* ``archaic`` - old fashioned, no longer used
 
-Synonyms marked by ``syn:``, antonyms marked by ``ant:``, related (see also)
-terms marked by ``rel:``, topics/tags marked by ``topic:``.
+Word relations:
+
+* ``syn:`` - synonyms
+* ``ant:`` - antonyms
+* ``hyper:`` - hypernyms
+* ``hypo:`` - hyponyms
+* ``rel:`` - related (see also) terms
+* ``topic:`` - topics/tags
 
 Translation marked by lowercase ISO 639-1 code with ``:`` (colon) character,
 like: