The use of Bk/Ek and Xo/Xc was not needed, as confirmed by
"diff <{mandoc old.1} <{mandoc new.1} | less". The only visible
changes should be the Ar -> Cm conversions.
Index: aucat.1
===================================================================
RCS file: /cvs/src/usr.bin/aucat/aucat.1,v
retrieving revision 1.109
diff -u -p -r1.109 aucat.1
--- aucat.1 14 Sep 2015 18:06:28 -0000 1.109
+++ aucat.1 17 Oct 2015 01:21:10 -0000
@@ -22,7 +22,6 @@
.Nd audio files manipulation tool
.Sh SYNOPSIS
.Nm aucat
-.Bk -words
.Op Fl dn
.Op Fl b Ar size
.Op Fl c Ar min : Ns Ar max
@@ -35,7 +34,6 @@
.Op Fl q Ar port
.Op Fl r Ar rate
.Op Fl v Ar volume
-.Ek
.Sh DESCRIPTION
The
.Nm
@@ -78,9 +76,7 @@ The options are as follows:
.It Fl b Ar size
The buffer size of the audio device in frames.
Default is 7680.
-.It Xo
-.Fl c Ar min : Ns Ar max
-.Xc
+.It Fl c Ar min : Ns Ar max
The range of audio file channel numbers.
The default is
.Cm 0:1 ,
@@ -125,15 +121,15 @@ Default is
Audio file type.
The following file types are supported:
.Bl -tag -width auto
-.It Ar raw
+.It Cm raw
Headerless file.
-.It Ar wav
+.It Cm wav
Microsoft WAV file format.
-.It Ar aiff
+.It Cm aiff
Apple's audio interchange file format.
-.It Ar au
+.It Cm au
Sun/NeXT audio file format.
-.It Ar auto
+.It Cm auto
Try to guess, depending on the file name.
This is the default.
.El
