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diff --git a/usr.sbin/usbdump/usbdump.8 b/usr.sbin/usbdump/usbdump.8
--- a/usr.sbin/usbdump/usbdump.8
+++ b/usr.sbin/usbdump/usbdump.8
@@ -100,14 +100,18 @@
.Ar file .
This option also works with the -s and -v options.
.It Fl f Ar filter
-The filter argument consists of either one or two numbers separated by a dot.
+The filter argument consists of either one or two numbers separated
+by a dot.
The first indicates the device unit number which should be traced.
-The second number which is optional indicates the endpoint which should be traced.
+The second number which is optional indicates the endpoint which should
+be traced.
To get all traffic for the control endpoint, two filters should be
created, one for endpoint 0 and one for endpoint 128.
-If 128 is added to the endpoint number that means IN direction, else OUT direction is implied.
+If 128 is added to the endpoint number that means IN direction, else OUT
+direction is implied.
A device unit or endpoint value of -1 means ignore this field.
-If no filters are specified, all packets are passed through using the default -1,-1 filter.
+f no filters are specified, all packets are passed through using the
+default -1,-1 filter.
This option can be specified multiple times.
.It Fl h
This option displays a summary of the command line options.
@@ -134,7 +138,6 @@
The default output format of
.Nm
is as follows:
-.Pp
.Bd -literal
<time> <bus>.<addr> <type>-<xfertype>-EP-<endoint>,\e
SPD=<speed>,NFR=<frames>,SLEN=<len>,IVAL=<interval>[,<ERR=errnum>]
@@ -151,7 +154,8 @@
.It <bus>
The USB host controller's bus unit number.
.It <addr>
-The unique number of the USB device as allocated by the host controller driver.
+The unique number of the USB device as allocated by the host controller
+driver.
.It <type>
.Sq SUBM
indicates a USB submit.

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