tlv: rewrite syntax specifications using IETF ABNF
refs #4853
Change-Id: Iad79a63675279d53de2f7bb4891d10bf01d0424f
diff --git a/types.rst b/types.rst
index 4f6c314..608b16e 100644
--- a/types.rst
+++ b/types.rst
@@ -82,6 +82,10 @@
| Preference | 30 | 0x1e |
+---------------------------------------------+------------------+-----------------+
+.. note::
+ ABNF grammar of this specification denotes TLV-TYPE of element X as ``X-TYPE``.
+ For example, ``INTEREST-TYPE`` means ``%x05``, the TLV-TYPE of ``Interest`` encoded as ``VAR-NUMBER``.
+
.. _type reservations:
TLV-TYPE number reservations