--- vt.4	2016-04-13 20:43:35.517025000 +0200
+++ vt.4.103	2016-04-13 20:49:33.562526804 +0200
@@ -254,6 +254,8 @@
 Enable debug request key combination, usually Ctrl+Alt+Esc.
 .It Va kern.vt.kbd_panic
 Enable panic key combination.
+.It Va kern.vt.enable_bell
+Enable terminal bell.
 .El
 .Sh FILES
 .Bl -tag -width /usr/share/vt/keymaps/* -compact