en-us	Adjust HUD Properties

en-us	Adjust LOD Ranges

en-us	AI

en-us	AI Objects

en-us	Aircraft Center (Experimental)

en-us	Aircraft Checklists

en-us	Aircraft Help

en-us	ALS Filter Effects

en-us	ATC Services in Range

en-us	Autopilot

en-us	Autopilot Settings

en-us	Autostart

en-us	Basic Simulator Keys

en-us	Carrier Controls

en-us	Cockpit View Options

en-us	Common Aircraft Keys

en-us	Configure Development Extensions

en-us	Cycle GUI Style

en-us	Debug

en-us	Development Keys

en-us	Display Tutorial Marker

en-us	Documentation Browser

en-us	Dump Scene Graph

en-us	Earthview Orbital Rendering

en-us	Environment

en-us	Environment Settings

en-us	Equipment

en-us	View Errors

en-us	Quit

en-us	--- Failures ---

en-us	FG1000 MFD

en-us	FG1000 PFD

en-us	FGCom Settings

en-us	File

en-us	Flight Recorder Control

en-us	Fuel and Payload

en-us	Weather

en-us	Select Airport

en-us	GPS Settings

en-us	Help

en-us	Help (opens in browser)

en-us	Highlighting

en-us	Immatriculation

en-us	Input Devices

en-us	Instrument Failures

en-us	Instrument Settings

en-us	Jetway Settings

en-us	Joystick Configuration

en-us	Joystick Information

en-us	Lag Settings

en-us	Light Switches

en-us	Load Flight Recorder Tape

en-us	Local Weather (Test)

en-us	Location

en-us	Logging

en-us	Map

en-us	Map (opens in browser)

en-us	Map (Canvas)

en-us	About

en-us	Mouse Configuration

en-us	MPCarrier Selection

en-us	Chat Dialog

en-us	Chat Menu

en-us	Pilot List

en-us	Multiplayer Settings

en-us	Multiplayer

en-us	Nasal Console

en-us	Nasal REPL Interpreter

en-us	Next Waypoint

en-us	Monitor System Performance

en-us	Adjust View Position

en-us	Position Aircraft In Air

en-us	Previous Waypoint

en-us	Print Rendering Statistics

en-us	Print Visible Scene Info

en-us	Browse Internal Properties

en-us	Pushback

en-us	Radio Settings

en-us	Random Attitude

en-us	Random Failures

en-us	Reload Autopilot

en-us	Reload GUI

en-us	Reload HUD

en-us	Reload Input

en-us	Reload Materials

en-us	Reload Aircraft Model

en-us	Reload Network

en-us	Reload Panel

en-us	Reload Scenery

en-us	Select Rendering Buffers

en-us	Hide/Show Rendering Buffers

en-us	Rendering Options

en-us	Instant Replay

en-us	Reset

en-us	Route Manager

en-us	Save Flight Recorder Tape

en-us	Traffic and Scenario Settings

en-us	Scenery Sources

en-us	Select Livery

en-us	Show/hide yokes

en-us	Screenshot

en-us	Screenshot Directory

en-us	Sound Configuration

en-us	Cycle On-Screen Statistics

en-us	Stereoscopic View Options

en-us	Stopwatch

en-us	Swift Connection

en-us	System Failures

en-us	Tanker Controls

en-us	Scenery Download

en-us	Tiller Steering

en-us	Time Mode

en-us	Time Settings

en-us	Toggle Fullscreen

en-us	Toggle Glide Slope Tunnel

en-us	Tower Position

en-us	Tutorials

en-us	Video Control

en-us	View

en-us	Add Clone View

en-us	Add Pair View

en-us	Add Pair Foreground View

en-us	View Options

en-us	Push Pair View

en-us	Volcanoes

en-us	VR Options

en-us	Walker

en-us	Walker animation dialog

en-us	Select Equipment

en-us	Select Theme

en-us	Toggle Walker out/in

en-us	Wildfire Settings

en-us	Wingman Controls

en-us	Save Video Configuration

en-us	Emit the Garmin AV400 protocol required to drive a Garmin 196/296 series GPS

en-us	Emit the set of AV400 strings required to drive a Garmin 400-series GPS from FlightGear

en-us	Open connection for "A" channel using Garmin WAAS GPS protocol

en-us	Open connection for "B" channel using Garmin WAAS GPS protocol

en-us	Specify a path to addon;

en-us	Set the ADF1 radio frequency, optionally preceded by a card rotation.

en-us	Set the ADF2 radio frequency, optionally preceded by a card rotation.

en-us	Select aircraft aerodynamics model to load

en-us	Enable/Disable AI subsystem (required for multi-player, AI traffic and many other animations.) Disabling it is deprecated.

en-us	Add and enable a new scenario. Multiple options are allowed.

en-us	Enable/Disable artificial traffic.

en-us	Select an aircraft profile as defined by a top level <name>-set.xml

en-us	Specify the exact directory to use for the aircraft (normally not required, but may be useful). Interpreted relatively to the current directory. Causes the <path-cache> from autosave_X_Y.xml, as well as --fg-aircraft and the FG_AIRCRAFT environment variable to be bypassed.

en-us	Aircraft

en-us	Specify starting position relative to an airport

en-us	Enable/Disable security flag. Enable means that network connections will be allowed full access to the simulator including running arbitrary scripts. Ensure you have adequate security (such as a firewall which blocks external connections).

en-us	Allow Nasal scripts to read files from directories listed as path (separate multiple paths with a semicolon (Windows) or a colon (UNIX)). By default, for security reasons, Nasal scripts can only read data from certain directories, such as $FG_ROOT, $FG_HOME, etc.

en-us	Starting altitude

en-us	Enable/Disable anti-aliased HUD

en-us	Specify a multiplier for the aspect ratio.

en-us	Open connection using the ATC sim protocol (atc610x)

en-us	Open connection using the Atlas protocol

en-us	Audio Options

en-us	Enable/Disable auto coordination

en-us	Avionics Options

en-us	Specify the bits per pixel

en-us	Specify path to your web browser

en-us	Assign a unique name to a player

en-us	Specify starting position on an AI carrier

en-us	Specify a starting position relative to the carrier where you can use the predefined abeam (start on downwind abeam) or FLOLS (start on final approach) values, or specify the name of the carrier's parking position. Must also specify a carrier.

en-us	Create an overcast ceiling, optionally with a specific thickness (defaults to 2000 ft).

en-us	Enable/Disable clock freeze

en-us	Enable/Disable 2D (flat) cloud layers

en-us	Enable/Disable 3D (volumetric) cloud layers

en-us	Set the COM1 radio frequency

en-us	Set the COM2 radio frequency

en-us	Enable/Disable CompositeViewer (extra view windows)

en-us	Specify the path to XML file for multi-pass rendering. The path is relative to $FG_ROOT (defaults to Compositor/default.xml).

en-us	Load additional properties from path

en-us	Enable/Disable displaying console (Windows specific)

en-us	Specify an additional base data directory (FGData), before the $FG_ROOT directory

en-us	Debugging Options

en-us	Enable/Disable developer mode

en-us	Enable/Disable runway light distance attenuation

en-us	Slave the DME to one of the NAV radios, or set its internal frequency.

en-us	Base directory to use for aircraft and scenery downloads (the TerraSync scenery directory may be specifically set with --terrasync-dir)

en-us	Environment Options

en-us	Fail the pitot, static, vacuum, or electrical system (repeat the option for multiple system failures).

en-us	Select the core flight dynamics model

en-us	Can be one of jsb, larcsim, yasim, magic, balloon, ada, external, or null

en-us	Flight Model

en-us	Features

en-us	Specify additional aircraft directory path(s) (alternatively, you can use --aircraft-dir to target a specific aircraft in a given directory)

en-us	Specify the root data path

en-us	Specify the scenery path(s);

en-us	Defaults to $FG_ROOT/Scenery

en-us	Enable/Disable FGCom built-in

en-us	Use a model viewer rather than load the entire simulator

en-us	Specify starting position relative to a fix

en-us	Open connection using the Flarm protocol, which includes NMEA/GPS and traffic reporting messages

en-us	Read all waypoints from a file

en-us	Disable fog/haze

en-us	Enable fastest fog/haze

en-us	Enable nicest fog/haze

en-us	Specify field of view angle

en-us	Enable/Disable aborting on encountering a floating point exception

en-us	Enable/Disable start in a frozen state

en-us	Enable/Disable fuel consumption freeze

en-us	Enable/Disable fullscreen mode

en-us	Open connection using the Garmin GPS protocol

en-us	General Options

en-us	Open connection using a predefined communication interface and a preselected communication protocol

en-us	Specify window geometry (640x480, etc)

en-us	Specify flight path angle (can be positive)

en-us	GMT

en-us	Set graphic options from one of the presets

en-us	Enable/Disable GUI (disabling GUI enables headless mode)

en-us	Specify heading (yaw) angle (Psi)

en-us	Show the most relevant command line options

en-us	Enable/Disable the move to hold short position for multiplayer

en-us	Enable/Disable celestial body growth illusion near the horizon

en-us	Enable http server on the specified address. Specify the port or address:port to bind to.

en-us	Enable/Disable 3D HUD

en-us	Hud displays percentage of triangles culled

en-us	Enable/Disable Heads Up Display (HUD)

en-us	Hud Options

en-us	Hud displays number of triangles rendered

en-us	Open connection using the International Gliding Commission protocol

en-us	Enable/Disable ignoring the autosave file, i.e. the settings saved in this file will not be loaded during startup, nor will the settings be saved to this file when closing the simulator

en-us	Enable/Disable starting in air (implied when using --altitude)

en-us	IO Options

en-us	Open connection to an Agwagon joystick

en-us	Enable screen shot http server on the specified port (replaced by --httpd)

en-us	Log JSBSim properties in a CSV file. An output directives file contains an <output type="CSV"></output> element, within which should be specified the parameters or parameter groups that should be logged.

en-us	Open connection to a remote joystick

en-us	Enable/Disable printing a report in JSON format on the standard output, giving information such as the FlightGear version, $FG_ROOT, $FG_HOME, aircraft and scenery paths, etc.

en-us	Select the language for this session

en-us	Starting latitude (south = -)

en-us	Enable/Disable GUI launcher

en-us	Select aircraft livery

en-us	Enable/Disable encode video while replaying tape specified by --load-tape

en-us	Load recording of earlier FlightGear session. For <name>, if <name> ends with .fgdata it is treated as the local path of the recording file; otherwise we form the local path by prepending <name> with the tape directory and appending ".fgtape". For <url> (starting with http:// or https://) we download the remote recording (which must be a Continuous recording) in the background to a url-dependent filename while replaying it; if the url-dependent filename already exists it is assumed to be a truncated download and we only download any remaining data.

en-us	Set fixed-dt mode while replaying tape specified by --load-tape

en-us	local aircraft time

en-us	Specify the detail levels, where levels are a space-separated numeric list of levels. The default is "1 3 5 7 9".

en-us	Specify the range multiplier (point from low to fine detail). Defaults is 2.

en-us	Specify the resolution of the terrain grid. Defaults is 1.

en-us	Specify the method of texturing the terrain. The default is bluemarble.

en-us	Specify which logging class(es) to use

en-us	Log to directory DIR. The special value 'desktop' causes logging to the desktop (OS-dependent location). This option may be given several times, using a different value each time. Inside the specified directory, the written log file is named FlightGear_YYYY-MM-DD_<num>.log, where <num> takes the values 0, 1, 2, etc.

en-us	Specify which logging level to use

en-us	Starting longitude (west = -)

en-us	Specify initial mach number

en-us	Specify the materials file used to render the scenery (default: Materials/regions/materials.xml)

en-us	Maximum frame rate in Hz.

en-us	Pass a METAR string to set up static weather (this implies --disable-real-weather-fetch)

en-us	Allows you to define a minimum status level (=development status) for all listed aircraft

en-us	Run the FDM this rate (iterations per second)

en-us	Enable/Disable extra mouse pointer

en-us	(i.e. for full screen Voodoo based cards)

en-us	Specify multipilot communication settings;

en-us	MultiPlayer Options

en-us	multiple instances can be used

en-us	Open connection using the FG Native Controls protocol

en-us	Open connection using the FG Native protocol

en-us	Open connection using the FG Native FDM protocol

en-us	Open connection using the FG Native GUI protocol

en-us	Set the NAV1 radio frequency, optionally preceded by a radial.

en-us	Set the NAV2 radio frequency, optionally preceded by a radial.

en-us	Specify starting position relative to an NDB

en-us	Specify the frequency of the NDB. Use with --ndb=ID

en-us	Network Options

en-us	Open connection using the NMEA protocol

en-us	Enable/Disable not loading any default configuration files (like .fgfsrc) unless explicitly specified with --config

en-us	Enable/Disable not attempting to trim the model

en-us	(only with --fdm=jsbsim)

en-us	Specify heading to reference point

en-us	Specify distance to reference point (nautical miles)

en-us	Enable/Disable starting at ground level (default enabled)

en-us	Open connection using the OpenGC protocol

en-us	Enable/Disable instrument panel

en-us	Specify parking position at an airport (must also specify an airport)

en-us	Same as the --parking-id option

en-us	Specify pitch angle (Theta)

en-us	Initial Position and Orientation

en-us	After starting the simulator, immediately open the properties dialog with the given property

en-us	Set property <name> to <value>. <type> can be one of string, double, float, long, int, or bool

en-us	Open connection using the interactive property manager

en-us	Specify which proxy server (and port) to use. The username and password are optional and should be MD5 encoded already. This option is only useful when used in conjunction with the real-weather-fetch option.

en-us	Open connection using the PVE protocol

en-us	Enable/Disable random buildings objects

en-us	Enable/Disable random scenery objects (buildings, etc.)

en-us	Enable/Disable random vegetation objects

en-us	Set up random wind direction and speed

en-us	Open connection using the Ray Woodworth motion chair protocol

en-us	Enable/Disable $FG_HOME read-only

en-us	Enable/Disable METAR based real weather fetching

en-us	Rendering Options

en-us	Enable/Disable automatic opening of the Launcher when exiting FlightGear

en-us	Enable/Disable resetting all user settings to their defaults (rendering options etc.)

en-us	Specify initial climb rate (can be negative)

en-us	Specify roll angle (Phi)

en-us	Route/Way Point Options

en-us	Open connection using the RUL protocol

en-us	Specify starting runway (must also specify an airport)

en-us	Enable/Disable saving preferences at program exit

en-us	Enable/Disable crash and error reports from being sent to the development team for analysis

en-us	Enable flat shading

en-us	Enable smooth shading

en-us	Print a list of the currently available aircraft types

en-us	Show a list of available audio device

en-us	Situation Options

en-us	Enable/Disable sound effects

en-us	Explicitly specify the audio device to use

en-us	Enable/Disable specular reflections on textured objects

en-us	Run the FDM 'n' times faster than real time

en-us	Enable/Disable splash screen

en-us	Specify a starting date/time with respect to

en-us	Specify the initial state of the aircraft to the given value

en-us	system time

en-us	Enable telnet server on the specified port

en-us	Specify the terrain engine you want to use: tilecache or pagedLOD

en-us	Enable/Disable automatic scenery downloads/updates

en-us	Set target directory for scenery downloads

en-us	Enable/Disable texture cache (DDS)

en-us	Specify the DDS texture cache directory to be different than the default location

en-us	Anisotropic Texture Filtering: values should be 1 (default), 2, 4, 8 or 16

en-us	Synchronize time with local real-world time

en-us	Synchronize time with real-world time

en-us	Add this time offset

en-us	Time Options

en-us	Specify a time of day

en-us	Trace the reads for a property;

en-us	Trace the writes for a property;

en-us	Enable/Disable trim the model

en-us	(only with --fdm=jsbsim)

en-us	Specify turbulence from 0.0 (calm) to 1.0 (severe)

en-us	Specify velocity along the body X axis

en-us	Remove $FG_HOME directory. For Windows, it additionally removes TerraSync, Aircraft and TextureCache directories from download directory.

en-us	Use feet for distances

en-us	Use meters for distances

en-us	Usage: fgfs [ option ... ]

en-us	Use with --terrain-engine=pagedLOD

en-us	Specify velocity along the body Y axis

en-us	Specify velocity along a vertical axis

en-us	Specify velocity along a West-East axis

en-us	Specify velocity along a South-North axis

en-us	Specify initial airspeed

en-us	Same as the --aircraft option

en-us	Show all command line options when combined with --help or -h

en-us	For a complete list of options use --help --verbose

en-us	Enable/Disable display the current FlightGear version

en-us	Specify the default forward view direction as an offset from straight ahead. Allowable values are LEFT, RIGHT, CENTER, or a specific number in degrees

en-us	Specify initial visibility in meters

en-us	Specify initial visibility in statute miles

en-us	Specify starting position relative to a VOR

en-us	Specify the frequency of the VOR. Use with --vor=ID

en-us	Enable/Disable virtual reality

en-us	Specify velocity along the body Z axis

en-us	Specify wind coming from DIR (degrees) at SPEED (knots)

en-us	Enable/Disable wireframe drawing mode

en-us	Specify a waypoint for the GC autopilot;

en-us	binding subsystems

en-us	creating subsystems

en-us	downloading scenery

en-us	Error loading 3D model

en-us	Errors occured loading aircraft systems (fuel, electrical, hydrualics)

en-us	Audio FX description contains errors

en-us	Errors loading terrain (BTG)

en-us	The add-on '%VALUE%' contains errors. Please report this to the add-on developers.

en-us	This aircraft (%VALUE%) contains errors. This may include visual issues, or the aircraft might not fly at all. Check for an updated version of the aircraft from its developers.

en-us	The selected aircraft (%VALUE%) contains errors. This may cause visual issues, or the aircraft might not fly at all. Please report the information below to the aircraft hangar's maintainers.

en-us	The custom scenery at '%VALUE%' contains errors. Parts may be missing, or the scenery may not load at all. Check for an updated version of the scenery.

en-us	Errors were found loading the core simulator files (FGData). This usually indicates a problem with the installation, or your local disk.

en-us	The joystick (input device) '%VALUE%' couldn't be loaded correctly. This usually means its configuration file is incorrect.

en-us	Loading a model for another pilot (via multi-player) failed. The other pilot will appear as a default model. (You can disable these errors from the multiplayer settings dialog.)

en-us	Network errors occurred while downloading data. Check your network connection is working correctly.

en-us	Allocating memory failed. Some resources will not be loaded. Adjust your settings to reduce view distance or number of objects loaded.

en-us	The scenario '%VALUE%' contains errors, and may not work correctly.

en-us	Problems occurred loading visual effects (shaders). This can cause objects to be invisible or appear incorrect. It can sometimes be fixed by changing rendering settings inside FlightGear, or occasionally, by updating the drivers for your graphics card.

en-us	The shared models data is missing or incomplete. This means all scenery will be missing some 3D models. To fix this, please enable TerraSync or download the current shared models data from https://www.flightgear.org/scenery/shared-models

en-us	Scenery downloaded via TerraSync is not loading correctly. This usually indicates a problem with your network connection or local disk.

en-us	Problems occurred loading simulated aircraft traffic: some traffic may not appear.

en-us	Errors occurred in an unknown part of FlightGear. Please report this bug to the FlightGear development team.

en-us	Errors loading user-interface

en-us	Errors loading input device configuration

en-us	Texture failed to load

en-us	Shader / Effect problems

en-us	This dialog is work-in-progress. The information shown may not be fully correct, so please check the detailed information (below) and give feedback if something seems wrong.

en-us	Click to show further details.

en-us	An error occurred

en-us	Errors loading scenery

en-us	Errors downloading scenery from TerraSync

en-us	File or resource is invalid or corrupted

en-us	File or resource header is incorrect

en-us	Unable to read/write files correctly (check permissions and disk space)

en-us	The resource contains a configuration problem

en-us	Network connection failure

en-us	The file or resource was not found

en-us	Unable to allocate sufficient memory

en-us	Unknown error

en-us	Scripted loading of XML failed

en-us	Errors loading model XML

en-us	finalizing position

en-us	finalizing subsystems

en-us	initializing

en-us	initializing graphics engine

en-us	initializing scenery

en-us	initializing subsystems

en-us	Licensed under the GNU GPL. See https://www.flightgear.org for more information.

en-us	loading aircraft

en-us	loading aircraft list

en-us	loading navigation data

en-us	loading scenery

en-us	loading fixes

en-us	[VALUE]% complete

en-us	loading airport data

en-us	loading navigation aid data

en-us	loading points of interest

en-us	reading airport data

en-us	extracting [VALUE]

en-us	Saved settings were migrated from a previous version of FlightGear. If you encounter any problems when using the system, try restoring the default settings, before reporting a problem. Saved settings can affect the appearance, performance and features of the simulator.

en-us	Settings migrated

en-us	The shared scenery models are not installed correctly. This will cause missing elements in all scenery. Enable automatic scenery downloading, or download the shared models from https://www.flightgear.org/scenery/shared-models and add them to your scenery list.

en-us	The shared scenery models have not downloaded correctly. This will cause missing elements in all scenery. Automatic scenery downloading is enabled, check your network connection is working as expected.

en-us	Missing shared models

en-us	KB

en-us	KB/s

en-us	MB

en-us	MB/s

en-us	Unstable nightly build - some features may be under active development

en-us	Drag while holding the right mouse button to look around

en-us	Hold Ctrl while looking around to move the view up, down, left or right

en-us	Press a/A to adjust the simulation speed

en-us	Press x/X to zoom in and out

en-us	Find frequencies of nearby ATC services from the Radios dialog

en-us	Press v to change your viewpoint, Ctrl-V to return to the cockpit

en-us	Press F3 to take a screenshot

en-us	Join the FlightGear community at https://forum.flightgear.org

en-us	Press h to bring up a Heads Up Display

en-us	Show or hide the menu bar by pressing F10

en-us	Frame-rate too low? - try disabling AI traffic

en-us	Select Environment → Weather to fly in different weather

en-us	Press F12 to change the radio frequencies easily

en-us	Look around by holding down the right mouse button and moving the mouse

en-us	Select Multiplayer → Multiplayer Settings to join the shared flight environment

en-us	Can't get the engine started? - see Help → Aircraft Checklists

en-us	Drag while holding the middle and right mouse buttons to move the viewpoint

en-us	Press / to explore the internals of the simulator

en-us	Press Tab to move the viewpoint with your mouse and use the scroll wheel to zoom

en-us	Love FlightGear? Donate to keep our infrastructure running at https://flightgear.org/donate

en-us	The border of a high pressure region, in which the airmass becomes unstable and various convective and stratiform clouds may appear.

en-us	Border of a high pressure region

en-us	The border of a low pressure region, in which the airmass is unstable and convective clouds start to form layers and merge into stratiform clouds.

en-us	Border of a low pressure region

en-us	If you just got your IFR rating, this is what you are allowed to do. But can you?

en-us	CAT I minimum

en-us	This is expert level. You will barely see the taxiway from the cockpit, even if you are on ground. Fog and light drizzle, freezing level at 1000ft.

en-us	CAT IIIb minimum

en-us	With just a 1/4 mile visibility and clouds at 100ft, you don't see much of the runway until seconds before touchdown. Trust your instruments to stay alive.

en-us	CAT II minimum

en-us	The center of a high pressure region, characterized by descending air and hence only weak cloud development with high visibility.

en-us	Core high pressure region

en-us	The core of a low pressure region, characterized by overcast clouds, bad visibility on the ground and significant rainfall.

en-us	Core low pressure region

en-us	Fog developed this autumn's morning. Expect good visibility above the layer. However - getting through it can be a challenge. Stay alive for a 500' climb and you'll see the sun!

en-us	Early morning fog

en-us	A lovely day for trip to your favorite 100$ hamburger airfield

en-us	Fair weather

en-us	A high pressure region, characterized by moderate to strong Cumulus development in the afternoon and fairly good visibility conditions.

en-us	High pressure region

en-us	A standard atmosphere model for testing and calibrating aircraft performance and design.

en-us	International Standard Atmosphere

en-us	Fetch live weather data for your nearest airport from noaa.gov. You need a working internet connection. Weather is generated automatically, once a valid METAR is received.

en-us	Live data

en-us	A low pressure region, characterized by rising air, widespread formation of stratiform clouds and beginning rain.

en-us	Low pressure region

en-us	Enter your favorite METAR weather. A valid METAR syntax is required.

en-us	Manual input

en-us	After the storm - limited visibility and some showers. Go or No-Go?

en-us	Marginal VFR

en-us	You're out for an adventure? Gusty winds blowing from the west and isolated thunderstorms should be avoided. Fasten your seatbelt!

en-us	Stormy Monday

en-us	A hot and damp summer day with thunderstorms developing in the afternoon. Be prepared for reduction of visibility in showers and strong gusts near thunderstorms

en-us	Thunderstorm

en-us	A warm sector, characterized by high moisture in the air and haze extending up to high altitudes, but otherwise largely convective cloud development.

en-us	Warm sector