soxdial: tweak doc.

1 files changed, 6 insertions, 6 deletions

diff --git a/soxdial b/soxdial
index 77e02e7..033096d 100755
--- a/soxdial
+++ b/soxdial
@@ -235,20 +235,20 @@ These are the actual digits to be dialled. Each dial string consists
 of one or more digits (as many as desired), and they will be played
 consecutively.
 
-DTMF digits 0 to 9, #, and * are supported. By default, letters are
+DTMF digits B<0> to B<9>, B<#>, and B<*> are supported. By default, letters are
 also supported, and will be converted to digits according to the
-standard layout of touchtone phones (e.g. A through C convert to 2,
-D through F are 3, etc).
+standard layout of touchtone phones (e.g. B<A> through B<C> convert to I<2>,
+B<D> through B<F> are I<3>, etc).
 
-Q and Z weren't present on classic touchtone phones, but they will be
-converted to 7 and 9, respectively (like modern cell phones).
+B<Q> and B<Z> weren't present on classic touchtone phones, but they will be
+converted to I<7> and I<9>, respectively (like modern cell phones).
 
 To add an extra delay between digits, use a comma (and see the B<-c>,
 B<--comma> option to set the length of the delay), or the B<-s>,
 B<--silence> option.
 
 To play the extra DTMF tones for the extended 16-digit keypad (which has
-A, B, C, and D keys), use the B<-x>, B<--extended> option. This disables
+B<A>, B<B>, B<C>, and B<D> keys), use the B<-x>, B<--extended> option. This disables
 letter-to-number conversion, but it can be re-enabled later on the
 command line with the B<-a>, B<--alphabet> option.