--- a/www/HACKING.rst	Sun Mar 13 18:26:32 2016 +0200
+++ b/www/HACKING.rst	Sun Mar 13 18:30:18 2016 +0200
@@ -85,12 +85,12 @@
 
 BNF form::
 
-  FILE ::= PREFIX "-" NAME "-" LANG ".dict-c5"
-  PREFIX ::= "gadict"
-  LANG ::= ISOCODE | ISOCODE "-" ISOCODE
+  FILE ::= "gadict_" NAME ".gadict"
 
-where ``ISOCODE`` is ISO 639-1 language (2 letter) code, currently ``en``,
-``ru``, ``uk`` in use, ``NAME`` is dictionary abbreviated name.
+``NAME`` may have form ``ISOCODE "-" ISOCODE``, like ``en-ru``, where
+``ISOCODE`` is ISO 639-1 language (2 letter) code
+
+``NAME`` may be a dictionary abbreviation name.
 
 World wide dictionary formats and standards
 ===========================================