@@ -1,4 +1,4 @@
-.\"	$NetBSD: hdaudio.4,v 1.17 2020/05/07 12:56:19 wiz Exp $
+.\"	$NetBSD: hdaudio.4,v 1.18 2021/03/11 17:42:14 nia Exp $
 .\"
 .\" Copyright (c) 2009, 2010 The NetBSD Foundation, Inc.
 .\" All rights reserved.
@@ -27,7 +27,7 @@
 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 .\" POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd February 16, 2020
+.Dd March 11, 2021
 .Dt HDAUDIO 4
 .Os
 .Sh NAME
@@ -132,4 +132,6 @@
 Handle unsolicited RIRB messages
 .It
 Modem function groups
+.It
+I/O with precision greater than 16 bits with the MI audio layer
 .El