--- a/doc/TW-TS-005	Thu Nov 06 23:19:57 2025 +0000
+++ b/doc/TW-TS-005	Fri Nov 07 00:41:56 2025 +0000
@@ -3,17 +3,24 @@
 Binary-file-format article.  However, a newer hexadecimal format has now been
 standardized as Themyscira Wireless Technical Specification TW-TS-005:
 
-https://www.freecalypso.org/specs/tw-ts-005-v010003.txt
+https://www.freecalypso.org/specs/tw-ts-005-v010100.txt
 
-The standard has two annexes intended for practical use:
+The original version of this standard had two annexes intended for practical
+use:
 
 * TW-TS-005 Annex A defines a representation format for FR and EFR codecs;
 * TW-TS-005 Annex B defines a representation format for HR codec.
 
+The current version of TW-TS-005 linked above has two additional annexes:
+
+* TW-TS-005 Annex C specifies representation of AMR RTP payloads in hex files;
+* TW-TS-005 Annex D specifies representation of CSD RTP payloads in hex files.
+
 The present version of ThemWi GSM codec libraries & utilities suite includes
 some utilities that operate on TW-TS-005 Annex A hex files; support for Annex B
 will appear in a future version when our work on GSM-HR codec integration
-progresses further.
+progresses further.  Support for Annex C is described in AMR-hex-utils article;
+no utilities for Annex D exist as of this writing.
 
 TW-TS-005 Annex A vs gsmx binary format
 =======================================