diff --git a/misc/fuel/README b/misc/fuel/README
index 3563215089..678bd25365 100644
--- a/misc/fuel/README
+++ b/misc/fuel/README
@@ -98,6 +98,7 @@ beast.
 
     - C-cC-xs : extract innermost sexp (up to point)  as a separate word
     - C-cC-xr : extract region as a separate word
+    - C-cC-xv : extract region as a separate vocabulary
 
 *** In the listener: