svn commit: r225090 - head/lib/libusb

Hans Petter Selasky hselasky at FreeBSD.org
Mon Aug 22 21:05:40 UTC 2011


Author: hselasky
Date: Mon Aug 22 21:05:39 2011
New Revision: 225090
URL: http://svn.freebsd.org/changeset/base/225090

Log:
  Whitespace corrections for LibUSB manual page (1/2).
  
  MFC after:	1 week
  Approved by:	re (kib)
  PR:		docs/159898

Modified:
  head/lib/libusb/libusb.3

Modified: head/lib/libusb/libusb.3
==============================================================================
--- head/lib/libusb/libusb.3	Mon Aug 22 20:44:18 2011	(r225089)
+++ head/lib/libusb/libusb.3	Mon Aug 22 21:05:39 2011	(r225090)
@@ -31,165 +31,123 @@
 .Os
 .Sh NAME
 .Nm libusb
-.
 .Nd "USB access library"
-.
-.
 .Sh LIBRARY
-.
-.
 USB access library (libusb -lusb)
-.
-.
 .Sh SYNOPSIS
-.
-.
 .In libusb.h
-.
-.
 .Sh DESCRIPTION
 The
 .Nm
 library contains interfaces for directly managing a usb device.
 The current implementation supports v1.0 of the libusb API.
-.
-.
 .Sh LIBRARY INITIALISATION / DEINITIALISATION
-.
 .Pp
-.
 .Ft int
 .Fn libusb_init libusb_context **ctx
-This function initialises libusb. Must be called at the beginning
-of the program. This function returns 0 on success or LIBUSB_ERROR on 
+This function initialises libusb.
+Must be called at the beginning
+of the program.
+This function returns 0 on success or LIBUSB_ERROR on
 failure.
-. 
 .Pp
-.
 .Ft void
 .Fn libusb_exit "libusb_context *ctx"
-Deinitialise libusb. Must be called at the end of the application.
-.
+Deinitialise libusb.
+Must be called at the end of the application.
 .Pp
-.
 .Ft const char *
 .Fn libusb_strerror "int code"
 Get ASCII representation of the error given by the
 .Fa code
 argument.
-.
-.
 .Pp
-.
 .Ft void
 .Fn libusb_set_debug "libusb_context *ctx" "int level"
 Set debug to the
 .Fa level
 level.
-.
 .Pp
-.
 .Ft ssize_t
 .Fn libusb_get_device_list "libusb_context *ctx" "libusb_device ***list"
 Fill into
-.Fa list 
-the list of usb device available. All the device created by this
-function must be unref and free when you are done with them. This
+.Fa list
+the list of usb device available.
+All the device created by this
+function must be unref and free when you are done with them.
+This
 function returns the number of devices in list or a LIBUSB_ERROR code.
-.
 .Pp
-.
 .Ft void
 .Fn libusb_free_device_list "libusb_device **list" "int unref_devices"
-Free the list of devices discovered by libusb_get_device_list. If 
+Free the list of devices discovered by libusb_get_device_list.
+If
 .Fa unref_device
 is set to 1 all devices are unref one time.
-.
 .Pp
-.
 .Ft uint8_t
 .Fn libusb_get_bus_number "libusb_device *dev"
 Returns the number of the bus contained by the device
 .Fa dev.
-.
 .Pp
-.
 .Ft uint8_t
 .Fn libusb_get_device_address "libusb_device *dev"
 Returns the device_address contained by the device
 .Fa dev.
-.
 .Pp
-.
 .Ft enum libusb_speed
 .Fn libusb_get_device_speed "libusb_device *dev"
 Returns the wire speed at which the device is connected.
 See the LIBUSB_SPEED_XXX enums for more information.
 LIBUSB_SPEED_UNKNOWN is returned in case of unknown wire speed.
-.
 .Pp
-.
 .Ft int
 .Fn libusb_get_max_packet_size "libusb_device *dev" "unsigned char endpoint"
-Returns the wMaxPacketSize value on success, LIBUSB_ERROR_NOT_FOUND if the 
+Returns the wMaxPacketSize value on success, LIBUSB_ERROR_NOT_FOUND if the
 endpoint does not exist and LIBUSB_ERROR_OTHERS on other failure.
-.
 .Pp
-.
 .Ft libusb_device *
 .Fn libusb_ref_device "libusb_device *dev"
 Increment the reference counter of the device
 .Fa dev.
-.
 .Pp
-.
 .Ft void
 .Fn libusb_unref_device "libusb_device *dev"
 Decrement the reference counter of the device
 .Fa dev.
-.
 .Pp
-.
 .Ft int
 .Fn libusb_open "libusb_device *dev" "libusb_device_handle **devh"
-Open a device and obtain a device_handle. Returns 0 on success, 
-LIBUSB_ERROR_NO_MEM on memory allocation problem, LIBUSB_ERROR_ACCESS 
-on permission problem, LIBUSB_ERROR_NO_DEVICE if the device has been 
+Open a device and obtain a device_handle.
+Returns 0 on success,
+LIBUSB_ERROR_NO_MEM on memory allocation problem, LIBUSB_ERROR_ACCESS
+on permission problem, LIBUSB_ERROR_NO_DEVICE if the device has been
 disconnected and a LIBUSB_ERROR code on error.
-.
 .Pp
-.
 .Ft libusb_device_handle *
 .Fn libusb_open_device_with_vid_pid "libusb_context *ctx" "uint16_t vid" "uint16_t pid"
-Convenience function to open a device with is 
-.Fa vid 
-and 
+Convenience function to open a device with is
+.Fa vid
+and
 .Fa pid.
 Returns NULL on error.
-.
 .Pp
-.
 .Ft void
 .Fn libusb_close "libusb_device_handle *devh"
 Close a device handle.
-.
 .Pp
-.
 .Ft libusb_device *
 .Fn libusb_get_device "libusb_device_handle *devh"
 Get the device contained by devh.
 Returns NULL on error.
-.
 .Pp
-.
 .Ft int
 .Fn libusb_get_configuration "libusb_device_handle *devh" "int *config"
-Returns the bConfiguration value of the current configuration. Returns 0
-on success, LIBUSB_ERROR_NO_DEVICE if the device has been disconnected 
+Returns the bConfiguration value of the current configuration.
+Returns 0
+on success, LIBUSB_ERROR_NO_DEVICE if the device has been disconnected
 and a LIBUSB_ERROR code on error.
-.
 .Pp
-.
 .Ft int
 .Fn libusb_set_configuration "libusb_device_handle *devh" "int config"
 Set the active configuration
@@ -197,73 +155,66 @@ Set the active configuration
 for the device contained by
 .Fa devh.
 This function returns 0 on success, LIBUSB_ERROR_NOT_FOUND if the requested
-configuration does not exist, LIBUSB_ERROR_BUSY if the interfaces are currently 
-claimed, LIBUSB_ERROR_NO_DEVICE if the device has been disconnected and a 
+configuration does not exist, LIBUSB_ERROR_BUSY if the interfaces are currently
+claimed, LIBUSB_ERROR_NO_DEVICE if the device has been disconnected and a
 LIBUSB_ERROR code on failure.
-.
 .Pp
-.
 .Ft int
 .Fn libusb_claim_interface "libusb_device_handle *devh" "int interface_number"
 Claim an interface in a given libusb_handle
 .Fa devh.
-This is a non-blocking function. It returns 0 success, LIBUSB_ERROR_NOT_FOUND 
-if the requested interface does not exist, LIBUSB_ERROR_BUSY if a program or 
-driver has claimed the interface, LIBUSB_ERROR_NO_DEVICE if the device has 
+This is a non-blocking function.
+It returns 0 success, LIBUSB_ERROR_NOT_FOUND
+if the requested interface does not exist, LIBUSB_ERROR_BUSY if a program or
+driver has claimed the interface, LIBUSB_ERROR_NO_DEVICE if the device has
 been disconnected and a LIBUSB_ERROR code on failure.
-.
 .Pp
-.
 .Ft int
 .Fn libusb_release_interface "libusb_device_handle *devh" "int interface_number"
-This function release an interface. All the claimed interface must be released
-before closing a device. Returns 0 on success, LIBUSB_ERROR_NOT_FOUND if the 
-interface was not claimed, LIBUSB_ERROR_NO_DEVICE if the device has been 
+This function release an interface.
+All the claimed interface must be released
+before closing a device.
+Returns 0 on success, LIBUSB_ERROR_NOT_FOUND if the
+interface was not claimed, LIBUSB_ERROR_NO_DEVICE if the device has been
 disconnected and LIBUSB_ERROR on failure.
-.
 .Pp
-.
 .Ft int
 .Fn libusb_set_interface_alt_setting "libusb_device_handle *dev" "int interface_number" "int alternate_setting"
-Activate an alternate setting for an interface. Returns 0 on success, 
-LIBUSB_ERROR_NOT_FOUND if the interface was not claimed or the requested 
-setting does not exist, LIBUSB_ERROR_NO_DEVICE if the device has been 
+Activate an alternate setting for an interface.
+Returns 0 on success,
+LIBUSB_ERROR_NOT_FOUND if the interface was not claimed or the requested
+setting does not exist, LIBUSB_ERROR_NO_DEVICE if the device has been
 disconnected and LIBUSB_ERROR code on failure.
-.
 .Pp
-.
 .Ft int
 .Fn libusb_clear_halt "libusb_device_handle *devh" "unsigned char endpoint"
-Clear an halt/stall for a endpoint. Returns 0 on success, LIBUSB_ERROR_NOT_FOUND
-if the endpoint does not exist, LIBUSB_ERROR_NO_DEVICE if the device has been 
+Clear an halt/stall for a endpoint.
+Returns 0 on success, LIBUSB_ERROR_NOT_FOUND
+if the endpoint does not exist, LIBUSB_ERROR_NO_DEVICE if the device has been
 disconnected and a LIBUSB_ERROR code on failure.
-.
 .Pp
-.
 .Ft int
 .Fn libusb_reset_device "libusb_device_handle *devh"
-Perform an USB port reset for an usb device. Returns 0 on success,
+Perform an USB port reset for an usb device.
+Returns 0 on success,
 LIBUSB_ERROR_NOT_FOUND if re-enumeration is required or if the device has
 been disconnected and a LIBUSB_ERROR code on failure.
-.
 .Pp
-.
 .Ft int
 .Fn libusb_check_connected "libusb_device_handle *devh"
-Test if USB device is still connected. Returns 0 on success,
+Test if USB device is still connected.
+Returns 0 on success,
 LIBUSB_ERROR_NO_DEVICE if has been disconnected and a LIBUSB_ERROR
 code on failure.
-.
 .Pp
-.
 .Ft int
 .Fn libusb_kernel_driver_active "libusb_device_handle *devh" "int interface"
-Determine if a driver is active on a interface. Returns 0 if no kernel driver
-is active, returns 1 if a kernel driver is active, returns LIBUSB_ERROR_NO_DEVICE
+Determine if a driver is active on a interface.
+Returns 0 if no kernel driver
+is active, returns 1 if a kernel driver is active,
+returns LIBUSB_ERROR_NO_DEVICE
 if the device has been disconnected and returns a LIBUSB_ERROR code on failure.
-.
 .Pp
-.
 .Ft int
 .Fn libusb_get_driver "libusb_device_handle *devh" "int interface" "char *name" "int namelen"
 or
@@ -284,9 +235,7 @@ This function is non-portable.
 The buffer pointed to by
 .Fa name
 is only zero terminated on success.
-.
 .Pp
-.
 .Ft int
 .Fn libusb_detach_kernel_driver "libusb_device_handle *devh" "int interface"
 or
@@ -295,69 +244,66 @@ or
 Detach a kernel driver from an interface.
 This is needed to claim an interface required by a kernel driver.
 Returns 0 on success, LIBUSB_ERROR_NOT_FOUND if no kernel driver was active,
-LIBUSB_ERROR_INVALID_PARAM if the interface does not exist, LIBUSB_ERROR_NO_DEVICE if the device has been disconnected and a LIBUSB_ERROR code on failure. This function is non-portable.
-.
+LIBUSB_ERROR_INVALID_PARAM if the interface does not exist,
+LIBUSB_ERROR_NO_DEVICE if the device has been disconnected
+and a LIBUSB_ERROR code on failure.
+This function is non-portable.
 .Pp
-.
 .Ft int
 .Fn libusb_attach_kernel_driver "libusb_device_handle *devh" "int interface"
-Re-attach an interface kernel driver previously detached. Returns 0 on success, 
-LIBUSB_ERROR_INVALID_PARAM if the interface does not exist, LIBUSB_ERROR_NO_DEVICE
-if the device has been disconnect, LIBUSB_ERROR_BUSY if the driver cannot be 
-attached because the interface is claimed by a program or driver and a 
+Re-attach an interface kernel driver previously detached.
+Returns 0 on success,
+LIBUSB_ERROR_INVALID_PARAM if the interface does not exist,
+LIBUSB_ERROR_NO_DEVICE
+if the device has been disconnect, LIBUSB_ERROR_BUSY if the driver cannot be
+attached because the interface is claimed by a program or driver and a
 LIBUSB_ERROR code on failure.
-.
 .Pp
-.
 .Sh USB DESCRIPTORS
-.
 .Pp
-.
 .Ft int
 .Fn libusb_get_device_descriptor "libusb_device *dev" "libusb_device_descriptor *desc"
 Get the USB device descriptor for the device
 .Fa dev.
-This is a non-blocking function. Returns 0 on success and a LIBUSB_ERROR code on 
+This is a non-blocking function.
+Returns 0 on success and a LIBUSB_ERROR code on
 failure.
-.
 .Pp
-.Ft int 
+.Ft int
 .Fn libsub_get_active_config_descriptor "libusb_device *dev" "struct libusb_config_descriptor **config"
-Get the USB configuration descriptor for the active configuration. Returns 0 on 
-success, returns LIBUSB_ERROR_NOT_FOUND if the device is in unconfigured state 
+Get the USB configuration descriptor for the active configuration.
+Returns 0 on
+success, returns LIBUSB_ERROR_NOT_FOUND if the device is in unconfigured state
 and returns another LIBUSB_ERROR code on error.
-.
 .Pp
-.Ft int 
+.Ft int
 .Fn libusb_get_config_descriptor "libusb_device *dev" "uint8_t config_index" "libusb_config_descriptor **config"
-Get USB configuration descriptor based on its index 
+Get USB configuration descriptor based on its index
 .Fa idx.
-Returns 0 on success, LIBUSB_ERROR_NOT_FOUND if the configuration does not exist 
+Returns 0 on success, LIBUSB_ERROR_NOT_FOUND if the configuration does not exist
 and returns another LIBUSB_ERROR code on error.
-.
 .Pp
 .Ft int
 .Fn libusb_get_config_descriptor_by_value "libusb_device *dev" "uint8 bConfigurationValue" "libusb_config_descriptor **config"
-Get a USB configuration descriptor with a specific bConfigurationValue. This is 
-a non-blocking function which does not send request through the device. Returns 0 
-on success, LIBUSB_ERROR_NOT_FOUND if the configuration does not exist and another 
+Get a USB configuration descriptor with a specific bConfigurationValue.
+This is
+a non-blocking function which does not send request through the device.
+Returns 0
+on success, LIBUSB_ERROR_NOT_FOUND if the configuration
+does not exist and another
 LIBUSB_ERROR code on failure.
-.
 .Pp
 .Ft void
 .Fn libusb_free_config_descriptor "libusb_config_descriptor *config"
 Free a configuration descriptor.
-.
 .Pp
 .Ft int
 .Fn libusb_get_string_descriptor_ascii "libusb_device_handle *devh" "uint8_t desc_idx" "unsigned char *data" "int length"
 Retrieve a string descriptor in C style ascii.
-Returns a positive number of bytes in the resulting ASCII string on success and a LIBUSB_ERROR code on failure.
-.
+Returns a positive number of bytes in the resulting ASCII string
+on success and a LIBUSB_ERROR code on failure.
 .Pp
-.
 .Sh USB ASYNCHRONOUS I/O
-.
 .Pp
 .Ft struct libusb_transfer *
 .Fn libusb_alloc_transfer "int iso_packets"
@@ -365,28 +311,24 @@ Allocate a transfer with
 .Fa iso_packets
 numbers of isochronous packet descriptors.
 Returns NULL on error.
-.
 .Pp
 .Ft void
 .Fn libusb_free_transfer "struct libusb_transfer *tr"
 Free a transfer.
-.
 .Pp
 .Ft int
 .Fn libusb_submit_transfer "struct libusb_transfer *tr"
 This function will submit a transfer and returns immediately.
-Returns 0 on success, LIBUSB_ERROR_NO_DEVICE if the device has been disconnected and 
+Returns 0 on success, LIBUSB_ERROR_NO_DEVICE if
+the device has been disconnected and
 LIBUSB_ERROR code on other failure.
-.
 .Pp
 .Ft int
 .Fn libusb_cancel_transfer "struct libusb_transfer *tr"
 This function asynchronously cancel a transfer.
 Returns 0 on success and LIBUSB_ERROR code on failure.
-.
 .Pp
 .Sh USB SYNCHRONOUS I/O
-.
 .Pp
 .Ft int
 .Fn libusb_control_transfer "libusb_device_handle *devh" "uint8_t bmRequestType" "uint8_t bRequest" "uint16_t wValue" "uint16_t wIndex" "unsigned char *data" "uint16_t wLength" "unsigned int timeout"
@@ -400,125 +342,121 @@ LIBUSB_ERROR_TIMEOUT if the transfer tim
 control request was not supported, LIBUSB_ERROR_NO_DEVICE if the
 device has been disconnected or another LIBUSB_ERROR code on other failures.
 The libusb error codes are always negative.
-.
 .Pp
 .Ft int
 .Fn libusb_bulk_transfer "struct libusb_device_handle *devh" "unsigned char endpoint" "unsigned char *data" "int length" "int *transferred" "unsigned int timeout"
 Perform an USB bulk transfer.
 A timeout value of zero means no timeout.
 The timeout value is given in milliseconds.
-Returns 0 on success, LIBUSB_ERROR_TIMEOUT 
-if the transfer timeout, LIBUSB_ERROR_PIPE if the control request was not 
-supported, LIBUSB_ERROR_OVERFLOW if the device offered more data, 
-LIBUSB_ERROR_NO_DEVICE if the device has been disconnected and 
+Returns 0 on success, LIBUSB_ERROR_TIMEOUT
+if the transfer timeout, LIBUSB_ERROR_PIPE if the control request was not
+supported, LIBUSB_ERROR_OVERFLOW if the device offered more data,
+LIBUSB_ERROR_NO_DEVICE if the device has been disconnected and
 LIBUSB_ERROR code on other failure.
-.
 .Pp
 .Ft int
 .Fn libusb_interrupt_transfer "struct libusb_device_handle *devh" "unsigned char endpoint" "unsigned char *data" "int length" "int *transferred" "unsigned int timeout"
 Perform an USB Interrupt transfer.
 A timeout value of zero means no timeout.
 The timeout value is given in milliseconds.
-Returns 0 on success, LIBUSB_ERROR_TIMEOUT 
-if the transfer timeout, LIBUSB_ERROR_PIPE if the control request was not 
-supported, LIBUSB_ERROR_OVERFLOW if the device offered more data, 
-LIBUSB_ERROR_NO_DEVICE if the device has been disconnected and 
+Returns 0 on success, LIBUSB_ERROR_TIMEOUT
+if the transfer timeout, LIBUSB_ERROR_PIPE if the control request was not
+supported, LIBUSB_ERROR_OVERFLOW if the device offered more data,
+LIBUSB_ERROR_NO_DEVICE if the device has been disconnected and
 LIBUSB_ERROR code on other failure.
-.
 .Pp
 .Sh USB EVENTS
-.
 .Pp
 .Ft int
 .Fn libusb_try_lock_events "libusb_context *ctx"
 Try to acquire the event handling lock.
 Returns 0 if the lock was obtained and 1 if not.
-.
 .Pp
 .Ft void
 .Fn libusb_lock_events "libusb_context *ctx"
-Acquire the event handling lock. This function is blocking.
-.
+Acquire the event handling lock.
+This function is blocking.
 .Pp
 .Ft void
 .Fn libusb_unlock_events "libusb_context *ctx"
-Release the event handling lock. This will wake up any thread blocked
+Release the event handling lock.
+This will wake up any thread blocked
 on libusb_wait_for_event().
-.
 .Pp
 .Ft int
 .Fn libusb_event_handling_ok "libusb_context *ctx"
-Determine if it still OK for this thread to be doing event handling. Returns 1
-if event handling can start or continue. Returns 0 if this thread must give up
+Determine if it still OK for this thread to be doing event handling.
+Returns 1
+if event handling can start or continue.
+Returns 0 if this thread must give up
 the events lock.
-.
 .Pp
 .Ft int
 .Fn libusb_event_handler_active "libusb_context *ctx"
-Determine if an active thread is handling events. Returns 1 if yes and 0 if there
+Determine if an active thread is handling events.
+Returns 1 if yes and 0 if there
 are no threads currently handling events.
-.
 .Pp
 .Ft void
 .Fn libusb_lock_event_waiters "libusb_context *ctx"
-Acquire the event_waiters lock. This lock is designed to be obtained under the
+Acquire the event_waiters lock.
+This lock is designed to be obtained under the
 situation where you want to be aware when events are completed, but some other
 thread is event handling so calling libusb_handle_events() is not allowed.
-.
 .Pp
 .Ft void
 .Fn libusb_unlock_event_waiters "libusb_context *ctx"
 Release the event_waiters lock.
-.
 .Pp
-.Ft int 
+.Ft int
 .Fn libusb_wait_for_event "libusb_context *ctx" "struct timeval *tv"
-Wait for another thread to signal completion of an event. Must be called
-with the event waiters lock held, see libusb_lock_event_waiters(). This will
+Wait for another thread to signal completion of an event.
+Must be called
+with the event waiters lock held, see libusb_lock_event_waiters().
+This will
 block until the timeout expires or a transfer completes or a thread releases
-the event handling lock through libusb_unlock_events(). Returns 0 after a 
+the event handling lock through libusb_unlock_events().
+Returns 0 after a
 transfer completes or another thread stops event handling, returns 1 if the
 timeout expired.
-.
 .Pp
 .Ft int
 .Fn libusb_handle_events_timeout "libusb_context *ctx" "struct timeval *tv"
-Handle any pending events by checking if timeouts have expired and by 
-checking the set of file descriptors for activity. Returns 0 on success, or a
+Handle any pending events by checking if timeouts have expired and by
+checking the set of file descriptors for activity.
+Returns 0 on success, or a
 LIBUSB_ERROR code on failure.
-.
 .Pp
 .Ft int
 .Fn libusb_handle_events "libusb_context *ctx"
-Handle any pending events in blocking mode with a sensible timeout. Returns 0
+Handle any pending events in blocking mode with a sensible timeout.
+Returns 0
 on success, returns a LIBUSB_ERROR code on failure.
-.
 .Pp
 .Ft int
 .Fn libusb_handle_events_locked "libusb_context *ctx" "struct timeval *tv"
 Handle any pending events by polling file desciptors, without checking if
-another threads are already doing so. Must be called with the event lock held.
-.
+another threads are already doing so.
+Must be called with the event lock held.
 .Pp
 .Ft int
 .Fn libusb_get_next_timeout "libusb_context *ctx" "struct timeval *tv"
-Determine the next internal timeout that libusb needs to handle. Returns 0
+Determine the next internal timeout that libusb needs to handle.
+Returns 0
 if there are no pending timeouts, 1 if a timeout was returned, or LIBUSB_ERROR
 code on failure.
-.
 .Pp
 .Ft void
 .Fn libusb_set_pollfd_notifiers "libusb_context *ctx" "libusb_pollfd_added_cb added_cb" "libusb_pollfd_removed_cb remove_cb" "void *user_data"
 Register notification functions for file descriptor additions/removals.
 These functions will be invoked for every new or removed file descriptor
 that libusb uses as an event source.
-.
 .Pp
 .Ft const struct libusb_pollfd **
 .Fn libusb_get_pollfds "libusb_context *ctx"
-Retrive a list of file descriptors that should be polled by your main loop as 
-libusb event sources. Returns a NULL-terminated list on success or NULL on failure.
-.
+Retrive a list of file descriptors that should be polled by your main loop as
+libusb event sources.
+Returns a NULL-terminated list on success or NULL on failure.
 .Sh LIBUSB VERSION 0.1 COMPATIBILITY
 .Pp
 The library is also compliant with LibUSB version 0.1.12.
@@ -555,16 +493,13 @@ The library is also compliant with LibUS
 .Fn usb_check_connected
 .Fn usb_get_driver_np
 .Fn usb_detach_kernel_driver_np
-.
 .Sh SEE ALSO
 .Xr libusb20 3 ,
 .Xr usb 4 ,
 .Xr usbconfig 8
 .Pp
 .Pa http://libusb.sourceforge.net/
-.
 .Sh HISTORY
-.
 .Nm
 support first appeared in
 .Fx 8.0 .


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