List of acronyms: D

This list contains acronyms, initialisms, and pseudo-blends that begin with the letter D.

For the purposes of this list:

acronym = an abbreviation pronounced as if it were a word, e.g., SARS = severe acute respiratory syndrome, pronounced to rhyme with cars
initialism = an abbreviation pronounced wholly or partly using the names of its constituent letters, e.g., CD = compact disc, pronounced cee dee
pseudo-blend = an abbreviation whose extra or omitted letters mean that it cannot stand as a true acronym, initialism, or portmanteau (a word formed by combining two or more words).

(a) = acronym, e.g.: SARS – (a) Severe acute respiratory syndrome

(i) = initialism, e.g.: CD – (i) Compact disc

(p) = pseudo-blend, e.g.: UNIFEM – (p) United Nations Development Fund for Women

(s) = symbol (none of the above, representing and pronounced as something else; for example: MHz – Megahertz)

(Main list of acronyms)

d – (s) Deci
D – (s) Deuterium

DA

da – (s) Danish language (ISO 639-1 code) – deca
DA – (s) Denmark (FIPS 10-4 country code) – (i) Debtors Anonymous – (i) U.S. Department of the Army – District Attorney
DAB – Digital Audio Broadcasting
DACT – (i) Data Automated Communications Terminal – Dissimilar Air Combat Training
DADVSI – (i) Loi sur le droit d’auteur et les droits voisins dans la société de l’information (French, "Law on copyrights and related rights in the information society")
DAES – (i) Defence Acquisition Executive Summary – (UK MoD) Directorate of Analysis, Experimentation and Simulation
DAF – (a) Dissolved Air Flotation, a technique used in water treatment
DAFIF – (a) Digital Aeronautical Flight Information File
DAK – (a) Disney's Animal Kingdom
DA&M – (i) (U.S.) Director, Administration & Management
dan – (s) Danish language (ISO 639-2 code)
DAO – (i) Division Ammunition Officer
DAQ – (p) Data acquisition – (i) Delivered Audio Quality
DARE – (a) Drug Abuse Resistance Education
DARO – (i/a) (U.S.) Defense Airborne Reconnaissance Office
DARPA – (a) U.S. Defense Advanced Research Projects Agency
DART – (a) Disaster Assistance Response Team – Dublin Area Rapid Transit
DAS – (a) Defensive Aids Suite
DASD – (i) (U.S.) Deputy Assistant Secretary of Defense
DASL – (i) Datapoint's Advanced Systems Language
DAU – (i) (U.S.) Defense Acquisition University
DAWN – (a) (U.S.) Drug Abuse Warning Network

DB

dB – (s) Decibel
Db – (s) Dubnium
DB – (i) Database – Deutsche Bahn
d/b/a – (i) doing business as
DBA – (i) De Bellis Antiquitatis (miniature wargaming rules)
DBBL – (i) (U.S. Army Simulation Center) Dismounted Battlespace Battle Laboratory
DBCS – (i) Double Byte Character Set
DBDO – (i) Desert BDO
DBE – (i) Dame Commander of the Order of the British Empire
DBF – (i) Detection By Fire (weapon launch signature)
DBM – (i) De Bellis Multitudinis (miniature wargaming rules) – Detection By Movement (military target)
DBR – (i) De Bellis Renationis (miniature wargaming rules)
DBRA – (i) Davis-Bacon Related Acts
DBS – (i) Direct Broadcast Services (television)

DC

DC
- (i) da capo
- Italian Democrazia Cristiana
- Digital Compass
- Direct Current
- (s) District of Columbia (postal symbol)
- (i) Douglas Aircraft Company
- Dublin Core
- Duty Cycle
- Disconnected
DCA
- (i) Defensive Counter Air
- Drum Corps Associates
- (p) DiChloroAcetate
- (s) Ronald Reagan Washington National Airport (IATA code)
DCAA – (i) (U.S.) Defense Contract Audit Agency
DCAS – (i) Devon and Cornwall Archery Society
DCC
- (i) Dallas Christian College
- Digital Command Control (model railroading)
- Direct Client-to-Client (Internet Relay Chat)
- Dismounted Close Combat
DCCP – (i) Datagram Congestion Control Protocol
DCD – (i) [Organ] Donation after Cardiac Death
DCDC – Development, Concepts and Doctrine Centre
DCE – (i) Data Communication Equipment
DCFC – (i) Death Cab for Cutie
DCI
- (i) Detection, Classification and Identification
- Drum Corps International
- Duellists' Convocation International, now known simply by the initials
DCIM – (p) Digital Camera Images
DCIMS
- (i) Dental Classification Information Management System
- Dismounted Combat Identification Marking System
DCL – Disney Cruise Line
DCN – Deacon
DCOM – Disney Channel Original Movie
DCOP – (i) Desktop Communication Protocol
DCSOPS – (p) Deputy Chief of Staff for Operations and plans
DCW – (i) Digital Chart of the World
DCYSC – (i) Discovery Channel Young Scientist Challenge

DD

DD – many, including due diligence and dear daughter (increasingly prevalent on social mailing lists, blogs, and bulletin boards); see entry
D&D
- (i) Dungeons and Dragons
- Diversion and Distress (Air Traffic Control)
DDA
DDD
- (i) Data Display Debugger
- Digital Digital Digital (CD mastering)
DDL – (i) Digital Data Link
DDN – (i) U.S. Defense Data Network
DDoS – (i) Distributed Denial of Service
DDP
- (i) Danish Design Prize
- Deutsche Demokratische Partei (German, "German Democratic Party" – former political party in Weimar Germany)
- Diamond Dallas Page (American professional wrestler)
DDR
- (i) Dance Dance Revolution
- Deutsche Demokratische Republik (German, "German Democratic Republic" (GDR), East Germany)
- Double Data Rate
- (s) East Germany (ISO 3166 trigram, obsolete since 1990)
DDR&E – (i) (U.S.) Defense Department Research and Engineering
DDS – (i) Doctor of Dental Surgery
DDT
- (i) Dichloro-Diphenyl-Trichloroethane (insecticide)
- Dynamic Debugging Tool (computing)

DE

de – (s) German language (ISO 639-1 code)
DE – (s) Delaware (postal symbol) – Germany (ISO 3166 digram)
DEA – (i) Drug Enforcement Administration
DEA – (i) Drug Enforcement Agency
DEC – (a/i) Department of Environmental Conservation – Digital Equipment Corporation – Disasters Emergency Committee
DeCA – (p) (U.S.) Defense Commissary Agency
DECSIM – (p) Model DEComposition and SIMulation algorithm – Directed Energy Combat SIMulation
DECT – (a) Digital European Cordless Telephone
DEFCON – (p) Defence readiness condition
DEFRA – (a) (UK) Department for Environment, Food and Rural Affairs
DELT – (a) Dual Ended Line Test (ing)
DEM – (i) Data Exchange Mechanism – Digital Elevation Model
DEN – (s) Denmark (IOC and FIFA trigram, but not ISO 3166)
DEPSECDEF – (p) (U.S.) Deputy Secretary of Defense
DERA – (a) British Defence Evaluation and Research Agency (1995–2001)
DES – (i) Deep Ecliptic Survey
deu – (s) German language (ISO 639-2 code)
DEU – (s) Germany (ISO 3166 trigram)

DF

DF
- (i) Direct Fire
- Direction Finding
- Distrito Federal (Spanish and Portuguese for "federal district")
DFAD – (p) Digital Feature Analysis Data ("dee-fad")
DFAS – (i) (U.S.) Defense Finance and Accounting Service
DFB – (i) Deutscher Fußball-Bund (German for "German Football Association")
DFCB – (i) Data Format Control Book
DfID – (i) UK Department for International Development
DFL
- (i) Democratic–Farmer–Labor (the full designation of the Minnesota affiliate of the U.S. Democratic Party)
- Deutsche Fußball Liga (German for "German Football League"), the operator of the top two leagues of German football
DFM – (i) Dynamic Flowgraph Methodology
DFM – (ii) Discrete Field Model see Superluminal motion
DFSP – (i) Dermatofibrosarcoma protuberans
DfT– (i) Department for Transport
DFTBA – (i) Don't Forget To Be Awesome- a term commonly used by the Vlogbrothers

DG

DG – (i) Dei gratia (Latin, "by the grace of God") – Director-General – Data General
DGA – (i) Direction générale des armées (French "Armed Forces General Directorate")
DGAF – (I) Don't give a f***
DGD&D – (i) UK Directorate General of Development and Doctrine
DGPS – (i) Differential GPS
DGZ – (i) Desired Ground Zero

DH

DH – (i) dear husband (increasingly prevalent on social mailing lists, blogs, and bulletin boards) – Designated hitter
DHA – (p) DocosaHexaenoic Acid
DHHS – (i) (U.S.) Department of Health and Human Services
DHL – (i) Dalsey, Hillblom, and Lynn (courier service)
DHRA – (i) (U.S.) DoD Human Resources Activity
DHS – (i) U.S. Department of Homeland Security
DHSS – (i) UK Department of Health and Social Security
DHTFYSS – (i) U.S. Don't Have Time For You Silly S****
DHY – (s) Dahomey (ISO 3166 trigram; became BEN for Benin in 1977)

DI

DIA – (i) U.S. Defense Intelligence Agency
DIAC – (a) Department of Immigration and Citizenship (Australia)
DiC – Design Island Centre (computing usually used in a teaching situation)
DICASS – (p) DIrectional Command Activated Sonobuoy System
DID - (i) Dissociative identity disorder
DILLIGAD – (a) Do I Look Like I Give A Damn? (military shorthand, slightly less offensive than the following)
DILLIGAF – (a) Do I Look Like I Give A Fuck? (military shorthand; the theme of biography, album, tour, and other products of Kevin Bloody Wilson)
DIF – (i) Data Interchange Format
DIFAR – (p) DIrectional Frequency Analysis and Recording
DIME – (a) Dense Inert Metal Explosive
DIMM – (a) Dual In-line Memory Module (computing)
DIN
- (i) Deutsches Institut für Normung (German, "German Institute for Standardization")
- Drug Identification Number (Canadian drug marketing requirement)
DINA
- (p/a) Diesel Nacional (Spanish, "National Diesel"—Mexican bus and truck manufacturer now known as DINA)
- Dirección de Inteligencia Nacional (Spanish, "National Intelligence Directorate"—former secret police of Chile)
DINKY – (a) Double Income, No Kids Yet
DIP – (a) Dual In-line Package (electronics)
DIPS – (a) Defense independent pitching statistics
DIR – (i) Defence Industrial Research
DIS
- (i) Defence Intelligence Staff
- (U.S.) Defense Investigative Service
- Distributed Interactive Simulation
- Draft International Standard (ISO)
DISA
- (a) U.S. Defense Information Systems Agency
- Distinguished Individual Service Award
DISCOM – (p) Division Support Command
DISE – (i) Deployable Intelligence Support Element
DISSTAF – (a) DIS Search and Target Acquisition Fidelity experiment
DITY – (i/a) Do-It-Yourself
div – (s) Dhivehi language (ISO 639-2 code)
DIVAD – (p) Division Air Defence
DIY – (i) Do It Yourself

DJ

DJ – (i) Disc Jockey – Dinner Jacket – (s) Djibouti (ISO 3166 digram; FIPS 10-4 country code)
DJD – (i) Degenerative Joint Disease – Dublin Julian Day – Discoveries in the Judaean Desert
DJF – (s) Djibouti franc (ISO 4217 currency code)
DJI – (s) Djibouti (ISO 3166 trigram)
DJS – (i) Director, Joint Staff

DK

DK – (s) Denmark (ISO 3166 digram)
DKK – (s) Danish krone (ISO 4217 currency code)

DL

DL – Dexter's Laboratory
DLA – (i) U.S. Defense Logistics Agency – (i) Dental Laboratories Association
DLIC – (i) Detachment Left-In-Contact
DLIR – (i) Depot-Level Inspection and Repair
DLL – (i) Dynamic Link Library
DLPFC or DL-PFC – (i) DorsoLateral PreFrontal Cortex
DLPMC – (i) DorsoLateral PreMotor Cortex
DLR – (i) Deutsches Zentrum für Luft- und Raumfahrt (German, German Aerospace Centre) – Docklands Light Railway
DLRP – (i) Data Link Reference Point
DLS – (i) Deep Lens Survey
DLSA – (i) (U.S.) Defense Legal Services Agency
DLSc – (p) Diploma in Library Science
DLSC – (i) U.S. Defense Logistics Services Center – U.S. Defense Logistics Support Command – Department of Library Special Collections (Western Kentucky University Libraries) – Direct Loan Servicing Center – Directorate of Land Strategic Concepts (Canada) – Dominican Lay Scholars Community
DLTBGYD – Don't let the bastards grind you down

DM

DM
- (s) Dominica (ISO 3166 digram)
- (i) Dungeon Master (role-playing games)
DMA
- (i) Designated market area (primarily a U.S. term)
- U.S. Defense Mapping Agency (became NIMA, then NGA)
- Direct Memory Access (computing)
- (s) Dominica (ISO 3166 trigram)
DMC – (i) (U.S.) Defense Management Council
DMCA – Digital Millennium Copyright Act
DMD
- (i) dentariae medicinae doctor (Latin, "doctor of dental medicine")
- Digital Micromirror Device
- Digital Multilayer Disk
DMI – (i) Desktop Management Interface (computing)
DMM – Digital Multimeter
DMOC – (i) Distributed Mission Operations Centre
DMOS – (i/a) Double Diffused MOS transistor ("dee-moss")
DMPA – (i) (U.S.) Defense Medical Programs Activity
DMPFC – (i) DorsoMedial PreFrontal Cortex
DMPK – (i) Drug Metabolism and Pharmacokinetics
DMRB – (i) Design Manual for Roads and Bridges
DMS – (i) U.S. Defense Message System
DMSO
- (p) Dimethyl sulfoxide
- (i) U.S. Defense Modeling & Simulation Office ("dim-so"), now Modeling and Simulation Coordination Office
DMSP – (i) U.S. Defense Meteorological Satellite Program
DMT – (i) Dimethyltryptamine
DMU – (i) Diesel Multiple Unit, a method of connecting self-propelled railway vehicles together to form a train under the control of one driver.
DMV – (i) Department of Motor Vehicles
DMZ – (i) DeMilitarized Zone

DN

DN - (i) Deacon
DNA
- (i) U.S. Defense Nuclear Agency
- Deoxyribonucleic acid
- Douglas Noël Adams
DNAW – (i) Day Night All Weather
DND – (i) Department of National Defence (Canada) – Do not disturb
DNDi – (i) Drugs for Neglected Diseases initiative
DNDO – (i) U.S. Domestic Nuclear Detection Office
DNM – (i) Defence Nuclear Material
DNK – (s) Denmark (ISO 3166 trigram)
DNR – (i) Do not resuscitate
DNS – (i) Domain name system

DO

DO – (s) Dominica (FIPS 10-4 country code) – Dominican Republic (ISO 3166 digram) – (i) Doctor of Osteopathic Medicine
DOA – (i) Dead On Arrival – Dead or Alive
DOB – (i) Date Of Birth
DoCRA – (a) Duty of Care Risk Analysis Standard
DOD – (i) U.S. Department of Defense
DODAF – (a) U.S. Department of Defense Architectural Framework
DoDD – (i) U.S. Department of Defense Directive
DoDEA – (i) (U.S.) Department of Defense Education Activity
DOE – (i/a) U.S. Department of Energy
DOHC – (i) Dual-OverHead-Cam engine
DOI – (i) Digital Object Identifier – U.S. Department of the Interior
DOM – (i) Deo optimo maximo (Latin, "to God, the best and greatest") – (a) Document Object Model – (s) Dominican Republic (ISO 3166 trigram)
DOMS – (i) (U.S.) Director of Military Support
DOP – (s) Dominican peso (ISO 4217 currency code)
DORA – (a) Defence of the Realm Act
DOS – (a) Denial of Service (DoS, cf. DDoS) – Density of State – Disk Operating System
DOT – (i) Department of Transportation (U.S. federal or state) – Damage Over Time (common in World of Warcraft)
DOTA – short-form for DEFENSE OF THE ANCIENTS a popular online epic game
DotD – (i) Deal of the Day (marketing gimmick)
DOTMLPF – (i) Doctrine, Organization, Training, Materiel, Leadership, Personnel, and Facilities (mnemonic)
DOW – (i) Died of Wounds

DP

DP – (i) Division de production (Algerian petroleum company)
DP – (i) Decision Point – Dynamic Programming
DPA – (i) UK Defence Procurement Agency
DPCO – (i) Double-Pole Change Over
DPDT – (i) Double-Pole Double-Throw
DPICM – (i) Dual-Purpose Improved Conventional Munition
DPKO – (p) UN Department for Peacekeeping Operations
DPMO – (i) (U.S.) Defense Prisoner of War/Missing Personnel Office
DPPDB – (p) Digital Point Positioning Database
DPRE – (p) Displaced Person or Refugee (plural Displaced Persons and Refugees) (originally Displaced Persons, Refugees, Evacuees)
DPRK – (i) Democratic People's Republic of Korea
DPST – (i) Double-Pole Single-Throw

DQ

DQ – (i) Dairy Queen – (s) Jarvis Island (FIPS 10-4 country code)

DR

DR – (i) Dead Reckoning – (s) Dominican Republic (FIPS 10-4 country code) – (i) Danmarks Radio (Danish Broadcasting Corporation)
DRA – (i) Defence Research Agency (UK, 1991–1995) – Democratic Republic of America
DRAGN – (a) Double Radio source Active Galactic Nucleus ("dragon")
DRAM – (a) Dynamic Random Access Memory ("dee-ram") (computing)
DRC – (i) Democratic Republic of the Congo
DRDC – (i) Defence Research & Development Canada
DREA – (i/a) Defence Research Establishment Atlantic (obsolete 2002)
DRES – (i/a) Defence Research Establishment Suffield (obsolete 2002)
DRET – (i/a) Defence Research Establishment Toronto (obsolete 2002)
DREV – (i/a) Defence Research Establishment Valcartier (obsolete 2002)
DRI – (i) Detection, Recognition, Identification – Dietary Reference Intake
DRIC – (i/a) (U.S.) Defense Research Information Center
DRL – (i) Daytime Running Lights – Dorman Roberts Ltd.
DRM – (i) Digital Rights Management
DRMS – (i) (U.S.) Defense Revitalization and Marketing Service
DRPR – (p) Drawing Practices
DRT – (i) Document Related Technologies

DS

Ds – (s) Darmstadtium
DS
- (i) Dear son (increasingly prevalent on social mailing lists, blogs, and bulletin boards)
- Defence Scientist
- Direct Support
- (s) Dust Storm (METAR Code)
DSA
- (i) (U.S.) Defense Support Activities
- Division Support Area
DSAA
- (i) (U.S.) Defense Security Assistance Agency
- Driving Schools Association of the Americas
- DECT Standard Authentication Algorithm
DSAS – (i) Disney Sing Along Songs
DSB – (i) (U.S.) Defense Science Board
DSC
- (i) Differential Scanning Calorimeter
- Digital Selective Calling
- Digital Still Camera
- Distinguished Service Cross
- Doctor of Surgical Chiropody (obsolete)
- Document structure convention (PostScript programming)
- Dynamic Stability Control
DSCS – (i) U.S. Defense Satellite Communications System
DSCSOC – (i) DSCS Operations Center
DSD – (i) Defence Studies Department (King's College, London)
DSDS – (i) Deutschland sucht den Superstar (German, "Germany Seeks the Superstar"), the German version of the Idol series
DSE – (i) Dry Sheep Equivalent
DSG – (i) Direct-Shift Gearbox
DSID – (i) Dismounted Soldier Identification System
DSL – (i) Digital Subscriber Line
DSLR – (i) Digital single-lens reflex (camera)
DSM – (i) Diagnostic and Statistical Manual of Mental Disorders
DSN – (i) Deep Space Network
DSO – (i) Distinguished Service Order (British military decoration)
dsp – (i) decessit sine prole (Latin, "died without issue") – genealogy short-hand
- dspl – (i) decessit sine prole legitima (Latin, "died without legitimate issue")
- dspm – (i) decessit sine prole mascula [superstite] (Latin, "died without surviving male issue" )
- dspml – (i) decessit sine prole mascula legitima (Latin, "died without legitimate male issue")
- dspms – (i) decessit sine prole mascula superstite (Latin, "died without surviving male issue")
- dsps – (i) Decessit sine prole superstite (Latin, "died without surviving issue")
DSP
- (i) Defense Standardization Program
- Defense Support Program
- Digital Signal Processing
DSPL – (i) Design Specialists and Plans Language
DSR – (i) Deformed Special Relativity
DSRV
- (i) Deaf Sports Recreation Victoria
- Deep Submergence Rescue Vehicle
DSS
- (i) Digitized Sky Survey
- Discarding-Sabot Shell (ammunition)
DST – (i) Daylight saving time
DSTL – (i) British Defence Science and Technology Laboratory
dsvp – d.s.v.p. decessit sine vitae patria (Latin, "died within fathers lifetime")
DSWA – (i) (U.S.) Defense Special Weapons Agency

DT

DTA – (i) Dental Technologists Association
DTD – (i) Digital Terrain Data
DTE – (i) Data Terminal Equipment – Down To Earth
DTED – (p) Digital Terrain Elevation Data ("dee-ted")
DTG – (i) Date-Time Group
DTH – (i) Direct To Home (television)
DTI – (i) UK Department of Trade and Industry
DTIC – (i) (U.S.) Defense Technical Information Center
DTL – (i) diode–transistor logicc (electronics)
DTM
- (i) Deutsche Tourenwagen Masters (German, "German Touring Car Masters" – a current motor racing series)
- Deutsche Tourenwagen Meisterschaft (German, "German Touring Car Championship" – a defunct motor racing series)
DTMF – (i) Dual-tone multi-frequency signaling
DTLOMS – (i) Doctrine, Training, Leader development, Organization, Materiel, and Soldier (mnemonic)
DTO – (i) Disruptive Technology Office (was ARDA)
DTOMLS – (i) Doctrine, Training, Organization, Materiel, Leader and Soldier development (mnemonic)
DTR – (i) Determine The Relationship
DTRA – (i) Defense Threat Reduction Agency ("deet-ra")
DTSA – (i) (U.S.) Defense Technology Security Administration (ii) Defend Trade Secrets Act

DU

DU
- (i) Depleted Uranium
- (s) Dust (METAR Code)
DUI
- (i) Data Use Identifier
- Data Use Institute
- Davis Unified Ignition
- Diving Unlimited International
- Documento Único de Identidad
- Documento Unico de Importación
- Driving Under the Influence
- Duke University Improv
DUMBO – (a) Down Under the Manhattan Bridge Overpass (Brooklyn neighborhood)
DUSD – (i) (U.S.) Deputy Under-Secretary of Defense

DV

dv – (s) Dhivehi language (ISO 639-1 code)
DV
- (i) Daily Value (FDA food guide)
- Deo volente (Latin, "God willing")
DVD – (i) Digital Versatile Disk (was Digital Video Disk)
DVLC – (i) UK Driver and Vehicle Licensing Centre
dvm – (i) decessit vita matris (Latin, "died in the lifetime of the mother")
DVM – (i) Doctor of Veterinary Medicine
DVO – (i) Direct View Optics
DVOM – Digital Volt-Ohm Meter
DVP - various meanings (disambiguation page)
- dvp – (i) decessit vita patris (Latin, "died in the lifetime of the father")
dvu – (i) decessit vita uxoris (Latin, "died in the lifetime of spouse")

DW

DW – (a) Drum Workshop
DWG – (p) Divisional Wargame (military simulation)
DWI – (i) Dance With Intensity – Danish West Indies – Diffusion-weighted imaging – Direct water injection – Disaster Welfare Inquiry – Drinking Water Inspectorate – Driving While Intoxicated/Impaired
DWM – (a) Doctor Who Magazine
DWIM – (a) Do What I Mean
DWTS – (a) Dancing with the Stars
DWW – (a) Down with Webster

DX

DX
- (s) Dexterity (role-playing games)
- (p) DeXtrorphan
- Distant (radio)
- (i) D-Generation X (professional wrestling stable)
DXA – (i) Dual-energy X-ray Absorptiometry
DXM – (p) DeXtroMethorphan

DY

Dy – (s) Dysprosium
DY – (s) Dahomey (ISO 3166 digram; obsolete since 1977)

DZ

dz – (s) Dzongkha language (ISO 639-1 code)
DZ – (s) Algeria (ISO 3166 digram) – Drizzle (METAR Code) – (i) Drop Zone
DZA – (s) Algeria (ISO 3166 trigram)
DZD – (s) Algerian dinar (ISO 4217 currency code)
dzo – (s) Dzongkha language (ISO 639-2 code)
DZO (Depleted Zinc Oxide — physics/chemistry jargon)

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