--- a/doc/Host-tools-overview	Thu Dec 29 21:06:52 2022 +0000
+++ b/doc/Host-tools-overview	Thu Dec 29 21:15:36 2022 +0000
@@ -136,10 +136,16 @@
 		format into binary bits to be loaded into a FreeCalypso phone;
 		see the Melody_E1 article for more information.
 
-fc-fr2tch	This hack-utility converts a GSM 06.10 speech sample from the
+fc-efr2tch	This utility converts a GSM EFR speech sample from Themyscira
+		gsmx format (defined in the GSM codec libraries & utilities
+		package) into an uplink play file that can be played with the
+		tch play command in fc-shell; see our TCH-bit-access article
+		for more information.
+
+fc-fr2tch	This utility converts a GSM 06.10 speech sample from the
 		de facto standard libgsm format (which can be recorded with
 		standard tools like SoX) into an uplink play file that can be
-		played with the tch play command in fc-shell; see the
+		played with the tch play command in fc-shell; see our
 		TCH-bit-access article for more information.
 
 fc-gsm2vm	This utility converts a GSM 06.10 speech sample from the same