diff --git a/lib/libc/rpc/rpc_clnt_create.3 b/lib/libc/rpc/rpc_clnt_create.3
index c083c6fbf8bb..2c6047259d3d 100644
--- a/lib/libc/rpc/rpc_clnt_create.3
+++ b/lib/libc/rpc/rpc_clnt_create.3
@@ -459,7 +459,7 @@ except
 has the extra argument
 .Fa timeout
 which specifies the maximum time allowed for
-for the creation attempt to succeed.
+the creation attempt to succeed.
 In all other respects, the
 .Fn clnt_tp_create_timed
 call behaves exactly like the
diff --git a/lib/libc/stdlib/exit.3 b/lib/libc/stdlib/exit.3
index 557af835d013..0d4a0a26b32d 100644
--- a/lib/libc/stdlib/exit.3
+++ b/lib/libc/stdlib/exit.3
@@ -97,7 +97,7 @@ as possible values of
 .Fa status .
 Cooperating processes may use other values;
 in a program which might be called by a mail transfer agent, the
-the values described in
+values described in
 .Xr sysexits 3
 may be used to provide more information to the parent process.
 .Pp
diff --git a/lib/libc/stdlib/grantpt.3 b/lib/libc/stdlib/grantpt.3
index cfa2d6e2cd86..b4ad8c4edf41 100644
--- a/lib/libc/stdlib/grantpt.3
+++ b/lib/libc/stdlib/grantpt.3
@@ -166,7 +166,7 @@ to:
 .Bl -tag -width Er
 .It Bq Er EINVAL
 .Fa mode
-consists an an invalid mode bit.
+consists of an invalid mode bit.
 .It Bq Er EAGAIN
 The system has no available pseudo-terminal devices.
 .El
diff --git a/lib/libc_r/man/pthread_condattr.3 b/lib/libc_r/man/pthread_condattr.3
index fb0c3186c1ef..ac5ba5dccb58 100644
--- a/lib/libc_r/man/pthread_condattr.3
+++ b/lib/libc_r/man/pthread_condattr.3
@@ -46,7 +46,7 @@ Condition attribute objects are used to specify parameters to
 .Fn pthread_cond_init .
 .Fx Ns 's
 implementation of conditions does not support any non-default
-attributes, so these functions are not very useful, though they are required to
+attributes, so these functions are not very useful, though they are required
 to be present by
 .Tn POSIX .
 .Pp
diff --git a/lib/libpthread/man/pthread_condattr.3 b/lib/libpthread/man/pthread_condattr.3
index 86e772a21937..bf28987c0aa4 100644
--- a/lib/libpthread/man/pthread_condattr.3
+++ b/lib/libpthread/man/pthread_condattr.3
@@ -46,7 +46,7 @@ Condition attribute objects are used to specify parameters to
 .Fn pthread_cond_init .
 .Fx Ns 's
 implementation of conditions does not support any non-default
-attributes, so these functions are not very useful, though they are required to
+attributes, so these functions are not very useful, though they are required
 to be present by
 .Tn POSIX .
 .Pp
diff --git a/sbin/devfs/devfs.8 b/sbin/devfs/devfs.8
index 570892ca19cb..1d7d44259545 100644
--- a/sbin/devfs/devfs.8
+++ b/sbin/devfs/devfs.8
@@ -278,7 +278,7 @@ E.g., if the above rule was added after
 .Pa /dev/speaker
 was created,
 this command will cause its file mode to be changed to 666,
-as rule rule prescribes.
+as rule prescribes.
 .Pp
 .Dl devfs rule add path "snp*" mode 660 group snoopers
 .Pp
diff --git a/sbin/raidctl/raidctl.8 b/sbin/raidctl/raidctl.8
index 8f63c2e22cf4..d384b81b0284 100644
--- a/sbin/raidctl/raidctl.8
+++ b/sbin/raidctl/raidctl.8
@@ -625,7 +625,7 @@ for use.
 .Pp
 Under certain circumstances (e.g. the additional component has not
 arrived, or data is being migrated off of a disk destined to become a
-component) it may be desirable to to configure a RAID 1 set with only
+component) it may be desirable to configure a RAID 1 set with only
 a single component.  This can be achieved by configuring the set with
 a physically existing component (as either the first or second
 component) and with a
diff --git a/share/examples/ses/getencstat/getencstat.0 b/share/examples/ses/getencstat/getencstat.0
index fa95be07cc73..c62de510b2c2 100644
--- a/share/examples/ses/getencstat/getencstat.0
+++ b/share/examples/ses/getencstat/getencstat.0
@@ -45,7 +45,7 @@
 .Nm
 gets summary and detailed SCSI Environmental Services (or SAF-TE) device
 enclosure status. The overall status is printed out. If the overall status
-is considered okay, nothing else is printed out (unless the the
+is considered okay, nothing else is printed out (unless the
 .Fl v
 option is used).
 .Pp
diff --git a/share/examples/ses/sesd/sesd.0 b/share/examples/ses/sesd/sesd.0
index dcad2273a759..dfb6b1c94bb0 100644
--- a/share/examples/ses/sesd/sesd.0
+++ b/share/examples/ses/sesd/sesd.0
@@ -45,7 +45,7 @@
 .Sh DESCRIPTION
 .Nm
 monitors SCSI Environmental Services (or SAF-TE) devices for changes
-in state and logs such changes changes to the system error logger
+in state and logs such changes to the system error logger
 (see
 .Xr syslogd 8 ) .
 At least one device must be specified.
diff --git a/share/man/man3/pthread_condattr.3 b/share/man/man3/pthread_condattr.3
index fb0c3186c1ef..ac5ba5dccb58 100644
--- a/share/man/man3/pthread_condattr.3
+++ b/share/man/man3/pthread_condattr.3
@@ -46,7 +46,7 @@ Condition attribute objects are used to specify parameters to
 .Fn pthread_cond_init .
 .Fx Ns 's
 implementation of conditions does not support any non-default
-attributes, so these functions are not very useful, though they are required to
+attributes, so these functions are not very useful, though they are required
 to be present by
 .Tn POSIX .
 .Pp
diff --git a/share/man/man4/bge.4 b/share/man/man4/bge.4
index b27d77b8b2b6..e930e5fb9be2 100644
--- a/share/man/man4/bge.4
+++ b/share/man/man4/bge.4
@@ -74,7 +74,7 @@ copper cable, except for the SysKonnect SK-9D41 which supports only
 The BCM570x builds upon the technology of the Alteon Tigon II.
 It has two R4000 CPU cores and is PCI v2.2 and PCI-X v1.0 compliant.
 It supports IP, TCP
-and UDP checksum checksum offload for both receive and transmit,
+and UDP checksum offload for both receive and transmit,
 multiple RX and TX DMA rings for QoS applications, rules-based
 receive filtering, and VLAN tag stripping/insertion as well as
 a 256-bit multicast hash filter.
diff --git a/share/man/man4/ng_bt3c.4 b/share/man/man4/ng_bt3c.4
index 145f8d154217..f10f83f8a129 100644
--- a/share/man/man4/ng_bt3c.4
+++ b/share/man/man4/ng_bt3c.4
@@ -106,7 +106,7 @@ for the node.
 This command takes a parameter that specifies queue number and returns
 current length of the queue for the node.
 .It Dv NGM_BT3C_NODE_SET_QLEN
-This command takes two parameters that specify queue number and and
+This command takes two parameters that specify queue number and
 maximum length of the queue and sets maximum length of the queue for
 the node.
 .It Dv NGM_BT3C_NODE_GET_STAT
diff --git a/share/man/man4/usb.4 b/share/man/man4/usb.4
index 337a8b47d93a..9bbde0507adb 100644
--- a/share/man/man4/usb.4
+++ b/share/man/man4/usb.4
@@ -366,7 +366,7 @@ record contains information about the device in a device event event.
 .Pp
 The
 .Va ue_cookie
-is an opaque value that uniquely determines which which
+is an opaque value that uniquely determines which
 device a device driver has been attached to (i.e., it equals
 the cookie value in the device that the driver attached to).
 .Pp
diff --git a/share/man/man9/mtx_pool.9 b/share/man/man9/mtx_pool.9
index a12e6d30cf10..660dbd1454c1 100644
--- a/share/man/man9/mtx_pool.9
+++ b/share/man/man9/mtx_pool.9
@@ -175,7 +175,7 @@ calls
 .Xr mtx_destroy 9
 on each mutex in the specified pool,
 deallocates the memory associated with the pool,
-and assigns NULL to the the pool pointer.
+and assigns NULL to the pool pointer.
 .Pp
 .Sh SEE ALSO
 .Xr msleep 9 ,
diff --git a/share/man/man9/signal.9 b/share/man/man9/signal.9
index b707c3a6b089..a83523898253 100644
--- a/share/man/man9/signal.9
+++ b/share/man/man9/signal.9
@@ -323,7 +323,7 @@ The
 function handles the actual delivery of the signal
 .Fa sig .
 .Fn postsig
-is called called from
+is called from
 .Fn ast
 after the kernel has been notified that a signal should be delivered
 (via a call to
diff --git a/share/man/man9/sx.9 b/share/man/man9/sx.9
index f27e482c2884..95dbe12aa0ca 100644
--- a/share/man/man9/sx.9
+++ b/share/man/man9/sx.9
@@ -162,7 +162,7 @@ by the first argument.
 A thread may not own a shared lock and an exclusive lock simultaneously;
 attempting to do so will result in deadlock.
 .Sh CONTEXT
-It is allowed to to own a shared lock or an exclusive lock while sleeping.
+It is allowed to own a shared lock or an exclusive lock while sleeping.
 .Sh SEE ALSO
 .Xr condvar 9 ,
 .Xr mtx_pool 9 ,
diff --git a/usr.bin/colldef/colldef.1 b/usr.bin/colldef/colldef.1
index d2425d030f7b..c11ed876850e 100644
--- a/usr.bin/colldef/colldef.1
+++ b/usr.bin/colldef/colldef.1
@@ -264,10 +264,11 @@ No errors were found and the output was successfully created.
 Errors were found.
 .El
 .Sh FILES
-.Bl -tag -width ".Pa /usr/share/locale/<language>/LC_COLLATE" -compact
-.It Pa /usr/share/locale/<language>/LC_COLLATE
-standard shared location  for  collation  orders
-under the locale locale
+.Bl -tag -width indent
+.It Pa /usr/share/locale/ Ns Ao Ar language Ac Ns Pa /LC_COLLATE
+The standard shared location for collation orders
+under the locale
+.Aq Ar language .
 .El
 .Sh SEE ALSO
 .Xr mklocale 1 ,
diff --git a/usr.bin/doscmd/doscmd.1 b/usr.bin/doscmd/doscmd.1
index 333221b2e832..56bb6c9d9823 100644
--- a/usr.bin/doscmd/doscmd.1
+++ b/usr.bin/doscmd/doscmd.1
@@ -199,7 +199,7 @@ to
 .Xc
 Map the requested io
 .Ar port
-(with optional range up to to
+(with optional range up to
 .Ar port+cnt Ns No -1 )
 to the real hardware I/O port(s).
 This will likely require root privs to access them.
@@ -458,7 +458,7 @@ This code is lightly tested and may not suit all needs.
 .Xc
 Map the requested io
 .Ar port
-(with optional range up to to
+(with optional range up to
 .Ar port+count Ns No -1 )
 to the real hardware I/O port(s).
 This will likely require root privs to access them.
diff --git a/usr.sbin/boot0cfg/boot0cfg.8 b/usr.sbin/boot0cfg/boot0cfg.8
index 2791bbef890a..e7e41fbacf26 100644
--- a/usr.sbin/boot0cfg/boot0cfg.8
+++ b/usr.sbin/boot0cfg/boot0cfg.8
@@ -107,7 +107,7 @@ specified (with
 prepended as necessary):
 .Bl -tag -width indent
 .It packet
-Use the disk packet (BIOS Int 0x13 extensions) interface, as
+Use the disk packet (BIOS Int 0x13 extensions) interface,
 as opposed to the legacy (CHS) interface, when doing disk I/O.
 This allows booting above cylinder 1023, but requires specific
 BIOS support.
diff --git a/usr.sbin/i4b/isdnd/isdnd.rc.5 b/usr.sbin/i4b/isdnd/isdnd.rc.5
index be31920f2702..8fde2fd4f1ca 100644
--- a/usr.sbin/i4b/isdnd/isdnd.rc.5
+++ b/usr.sbin/i4b/isdnd/isdnd.rc.5
@@ -153,7 +153,7 @@ log-file.
 The default is off.
 (optional)
 .It Li mailer
-This keyword is used to specify the path/name of a mail program which
+This keyword is used to specify the path/name of a mail program
 which is able to use the "-s" flag to specify a subject on its
 command line.
 In case of a fatal error exit of
diff --git a/usr.sbin/i4b/isdndebug/isdndebug.8 b/usr.sbin/i4b/isdndebug/isdndebug.8
index 0eb9d923193c..6a49367955fb 100644
--- a/usr.sbin/i4b/isdndebug/isdndebug.8
+++ b/usr.sbin/i4b/isdndebug/isdndebug.8
@@ -59,7 +59,7 @@ manipulated using this utility.
 A second usage of
 .Nm
 is to display and reset chipset specific statistics and/or error counters
-and and to display and reset the D-channel layer 2
+and to display and reset the D-channel layer 2
 (Q.921 LAPD protocol) statistics and error counters.
 .Pp
 The following options are available:
diff --git a/usr.sbin/mrouted/mrouted.8 b/usr.sbin/mrouted/mrouted.8
index d902c74efcaa..ec699ac4cf37 100644
--- a/usr.sbin/mrouted/mrouted.8
+++ b/usr.sbin/mrouted/mrouted.8
@@ -325,7 +325,7 @@ As described above, but only applicable to this interface/tunnel.
 .It rexmit_prunes Ar "[on|off]"
 As described above, but only applicable to this interface/tunnel.
 Recall that prune retransmission
-defaults to on on point-to-point links and tunnels, and off on
+defaults to on for point-to-point links and tunnels, and to off for
 multi-access links.
 .It allow_nonpruners
 By default,
diff --git a/usr.sbin/mtree/mtree.8 b/usr.sbin/mtree/mtree.8
index be62890d856a..c90cf2c8ffaa 100644
--- a/usr.sbin/mtree/mtree.8
+++ b/usr.sbin/mtree/mtree.8
@@ -154,7 +154,7 @@ the
 file.
 .El
 .Pp
-Specifications are mostly composed of ``keywords'', i.e. strings that
+Specifications are mostly composed of ``keywords'', i.e. strings
 that specify values relating to files.
 No keywords have default values, and if a keyword has no value set, no
 checks based on it are performed.
diff --git a/usr.sbin/rtadvd/rtadvd.conf.5 b/usr.sbin/rtadvd/rtadvd.conf.5
index 90f747090aac..6bc98c9e1405 100644
--- a/usr.sbin/rtadvd/rtadvd.conf.5
+++ b/usr.sbin/rtadvd/rtadvd.conf.5
@@ -323,7 +323,7 @@ Bit 4
 .Li 0x10
 .Pc
 and
-and Bit 3
+Bit 3
 .Po
 .Li 0x08
 .Pc