G.I.F.T. Animated Logo.

General Information, Facts & Tables
[Category Related Lists]

View a framed version of this site.View the list of all pages on this site.Search the content of this site by keyword.

Click on the titles or icons to expand / collapse the lists.
Note! It may take several seconds to expand / collapse the lists.

Expand All | Contract All

  • Classification Systems
    • Dewey Decimal Classification System (Reduced to groups of 10)
      • Number: Contents [Number 0 - 9]
      • 000: Generalities
      • 010: Bibliography
      • 020: Library & Information Sciences
      • 030: General Encyclopedic Works
      • 040: Undefined
      • 050: General serials & their indexes
      • 060: General Organizations
      • 070: News Media| Journalism| Publishing
      • 080: General Collections
      • 090: Manuscripts & rare Books
      • 100: Philosophy & Psychology
      • 110: Metaphysics
      • 120: Epistemology| Causation| humankind
      • 130: Paranormal phenomena
      • 140: Specific philosophical schools
      • 150: Psychology
      • 160: Logic
      • 170: Ethics (Moral philosophy)
      • 180: Ancient| Medieval| Oriental philosophy
      • 190: Modern Western Psychology
      • 200: Religion
      • 210: Natural Theology
      • 220: Bible
      • 230: Christian Theology
      • 240: Christian Moral & Devotional Theology
      • 250: Christian Orders & Local Church
      • 260: Christian Social Theology
      • 270: Christian church history
      • 280: Christian Denominations & Sects
      • 290: Other & Comparative religions
      • 300: Social Sciences
      • 310: General Statistics
      • 320: Political science
      • 330: Economics
      • 340: Law
      • 350: Public Administration
      • 360: Social services; association
      • 370: Education
      • 380: Commerce| communications| transport
      • 390: Customs| etiquette| folklore
      • 400: Language
      • 410: Linguistics
      • 420: English & Old English
      • 430: Germanic Languages German
      • 440: Romance Languages French
      • 450: Italian| Romanian| Rhaeto-Romanic
      • 460: Spanish & Portugeuse languages
      • 470: Italic languages| Latin
      • 480: Hellenic languages Classical Greek
      • 490: Other Languages
      • 500: Natural Sciences & Mathematics
      • 510: Mathematics
      • 520: Astronomy & Allied sciences
      • 530: Physics
      • 540: Chemistry & Allied sciences
      • 550: Earth sciences
      • 560: Paleontology| Paleozoology
      • 570: Life sciences
      • 580: Botanical Sciences
      • 590: Zoological Sciences
      • 600: Technology (Applied Sciences)
      • 610: Medical sciences| Medicine
      • 620: Engineering & Allied operations
      • 630: Agriculture
      • 640: Home Economics & family living
      • 650: Management & auxiliary services
      • 660: Chemical engineering
      • 670: Manufacturing
      • 680: Manufacture for specific uses
      • 690: Buildings
      • 700: The Arts
      • 710: Civic & landscape art
      • 720: Architecture
      • 730: Plastic arts |Sculpture
      • 740: Drawing & Decorative arts
      • 750: Painting & paintings
      • 760: Graphic arts Printmaking & prints
      • 770: Photography & photographs
      • 780: Music
      • 790: Recreational & performing arts
      • 800: Literature and Rhetoric
      • 810: American literature in English
      • 820: English & Old English literatures
      • 830: Literatures of Germanic languages
      • 840: Literatures of Romance languages
      • 850: Italian| Romanian| Rhaeto-Romanic
      • 860: Spanish & Portuguese literatures
      • 870: Italic literatures| Latin
      • 880: Hellenic literatures Classical Greek
      • 890: Literatures of other languages
      • 900: Geography & History
      • 910: Geography & Travel
      • 920: Biography| genealogy| insignia
      • 930: History of ancient world
      • 940: General history of Europe
      • 950: General History of Asia |Far East
      • 960: General History of Africa
      • 970: General History of North America
      • 980: General History of South America
      • 990: General History of other areas
    • Library of Congress Classification System
      • Letter(s): Classification [Letter A - Z]
      • A: General Works
        • AE: Encyclopedias
        • AG: General reference books
        • AI: Indexes
        • AM: Museums
        • AN: Newspapers
        • AP: Periodicals
        • AS: Societies
        • AY: Yearbooks, annuals
        • AZ: Scholarship and learning
      • B: Philosophy and Religion
        • BC: Logic
        • BD: Metaphysics
        • BF: Psychology
        • BH: Aesthetics
        • BJ: Ethics
        • BL: Religion
        • BM: Judaism
        • BP: Oriental religions
        • BR: Christianity
        • BS: Bible
        • BT: Christian doctrine
        • BV: Practical Christianity
        • BX: Collections and sermons
      • C: Historical Sciences
        • CB: History of civilization
        • CC: Archaeology
        • CD: Archives, diplomatics
        • CE: Chronology
        • CJ: Numismatics
        • CR: Heraldry
        • CS: Genealogy
        • CT: Biography, collections
      • D-F: History and Topography
        • D: World history, The World Wars
        • DA: Great Britain, excepting Scotland
        • DB: Austria-Hungary
        • DC: France
        • DD: Germany
        • DE: Classical antiquity
        • DF: Greece
        • DG: Italy
        • DH: Belgium
        • DJ: Holland
        • DK: Russia
        • DL: Scandinavia
        • DP: Spain and Portugal
        • DQ: Switzerland
        • DR: Turkey, Balkans
        • DS: Asia
        • DT: Africa
        • DU: Australia, Oceania
        • DX: Gypsies
        • E-F: America, Canada
      • G: Geography, Anthropology
        • GA: Mathematical geography
        • GB: Physical geography
        • GC: Oceanography
        • GF: Anthropogeography
        • GN: Anthropology
        • GR: Folklore
        • GT: Manners and customs
        • GV: Sports and pastimes
      • H: Social Sciences, Economics
        • HA: Statistics
        • HB: Economics
        • HC: Economic history and conditions
        • HD: Economic history, land industry and labour
        • HE: Transport, communication
        • HF: Commerce
        • HG: Finance
        • HJ: Finance, public
        • HM: Sociology
        • HN: Social history
        • HQ: Family, marriage, woman
        • HS: Associations
        • HT: Communities, classes
        • HV: Social pathology
        • HX: Socialism, communism
      • J: Political Science
        • JA: General works
        • JC: The State
        • JF: Constitutional history and description
        • JK-JL: American
        • JN: European
        • JQ: Asian, African, Australian
        • JS: Local government
        • JV: Colonisation
        • JX: International law
      • K: Law
      • L: Education
        • LA: History of education
        • LB: Theory and practice
        • LC: Special forms
        • LD-LJ: Universities and colleges
      • M: Music
        • MA: Musical scores
        • ML: Literature of music
        • MT: Musical instruction
      • N: Fine Arts
        • NA: Architecture
        • NB: Sculpture
        • NC: Graphic arts
        • ND: Painting
        • NE: Engraving
        • NK: Decoration and ornament
      • O: Prose fiction, alphabetically arranged by names of authors
      • P: Language and Literature
        • PA: Greek and Latin
        • PB: Celtic and Gaelic
        • PC: Romance languages
        • PD-PF: Teutonic languages
        • PG: Slavic languages and  literatures
        • PH: Finno-Ugrian languages and literatures
        • PJ-PL: Oriental languages and literatures
        • PM: Hyperborean, Indian, and artificial languages and literatures
        • PN: General literature
        • PQ: French, Italian, Spanish literature
        • PR: English literature
        • PS: American literature
        • PT: German, Scandinavian literatures
      • Q: Science
        • QA: Mathematics
        • QB: Astronomy
        • QC: Physics
        • QD: Chemistry
        • QE: Geology
        • QH: Natural history
        • QK: Botany
        • QL: Zoology
        • QM: Human anatomy
        • QP: Physiology
        • QR: Bacteriology
      • R: Medicine
        • RA: Public health
        • RB: Pathology
        • RC: Practice of medicine
        • RC: Surgery
        • RE: Ophthalmology
        • RF: Otology, rhinology, laryngology
        • RG: Gynaecology
        • RJ: Pediatrics
        • RK: Dentistry
        • RL: Dermatology
        • RM: Therapeutics
        • RS: Materia medica
        • RT: Nursing
        • RX: Homeopathy
      • S: Agriculture
        • SB: Field crops, horticulture
        • SD: Forestry
        • SF: Farm animals, veterinary medicine
        • SH: Fish and angling
        • SK: Hunting sports
      • T: Technology
        • TA: General and civil engineering
        • TC: Hydraulic engineering
        • TD: Municipal and sanitary engineering, transport engineering
        • TE: Roads
        • TF: Railways
        • TG: Bridges, roofs
        • TH: Building construction
        • TJ: Mechanical engineering
        • TK: Electrical engineering
        • TL: Automobile engineering
        • TN: Mineral industries
        • TP: Chemical technology
        • TR: Photography
        • TS: Manufactures
        • TT: Trades
        • TX: Domestic science
      • U: Military science
      • V: Naval science
      • Z: Bibliography
    • G.I.F.T. Computerised Data Classification System
      • A system designed for computer indexing of real world data at a file system level using a three letter code. Primary Category Codes, 1st and 2nd characters
      • Code: Category [Code A - Z]
      • _: Non specific category information
      • A: Fine Art
        • A_: Non specific category information
        • AA: Painting of architectural structures, landscapes
        • AB: Painting of members of the animal kingdom
        • AC: Art having ceramics as its dominant material
        • AD: Freehand drawing, sketching
        • AE: Timber Art
        • AF: Metalic Art
        • AG: Glass Art
        • AH: Human Subject Art
        • AJ: Textile Art
        • AL: Landscape Art
        • AM: Aquatic Art
        • AO: Portrait Art
        • AP: Methods / Procedures
        • AS: 3D Art
        • AT: Methods / Procedures
        • AU: Theory
        • AV: Mural Art
        • AW: Technical Drawing
        • AX: Digital Art
        • AY: Digital Animation Art
        • AZ: Digital Audio Visual Art
      • B: Biological Science
        • B_: Non specific category information
        • BA: Animals existing on both land and water
        • BB: Animals able to fly
        • BD: Animals that can be domesticated
        • BE: Non animal specific relating to evolution
        • BF: Animals existing in water
        • BG: Non specific animal relating to genetics
        • BI: Invertabrates
        • BM: Mammals
        • BN: Domestic Insects
        • BP: Non animal specific, relating to reproduction
        • BR: Invertebrates having cold blood
      • C: Chemical Science
        • C_: Non specific category information
        • CA: Compositions of all substances
        • CB: Biological
        • CE: Electrical
        • CF: Consumption
        • CG: Gaseous
        • CI: Non Carbon Based
        • CL: Liquid State
        • CO: Carbon Based
        • CP: Plasma
        • CQ: Light
        • CR: Radioactive
        • CS: Solid State
        • CT: Thermo
        • CY: Cryo
      • D: Botanical
        • D_: Non specific category information
        • DA: Thallophyta division (Cryptograms sub class)
        • DB: Pteridophyta division (Cryptograms sub class)
        • DC: Gymnosperms division (Phanerograms sub class)
        • DD: Angiosperms division (Phanerograms sub class)
        • DF: Pteridophyta division (Cryptograms sub class)
        • DG: Gymnosperms division (Phanerograms sub class)
        • DH: Pteridophyta division (Cryptograms sub class)
        • DI: Thallophyta division (Cryptograms sub class)
        • DL: Bryophyta division (Cryptograms sub class)
        • DM: Bryophyta division (Cryptograms sub class)
        • DN: Gymnosperms division (Phanerograms sub class)
        • DO: Angiosperms division (Phanerograms sub class)
        • DY: Gymnosperms division (Phanerograms sub class)
      • E: Educational
        • E_: Non specific category information
        • EA: Age group 0 ~ 1 year old
        • EB: Age group 1 ~ 2 year old
        • EC: Age group 2 ~ 3 year old
        • ED: Age group 3 ~ 4 year old
        • EE: Age group 4 ~ 5 year old
        • EF: Age group 5 ~ 6 year old
        • EG: Age group 6 ~ 7 year old
        • EH: Age group 7 ~ 8 year old
        • EI: Age group 8 ~ 9 year old
        • EJ: Age group 9 ~ 10 year old
        • EK: Age group 10 ~ 11 year old
        • EL: Age group 11 ~ 12 year old
        • EM: Age group 12 ~ 13 year old
        • EN: Age group 13 ~ 14 year old
        • EO: Age group 14 ~ 15 year old
        • EP: Age group 15 ~ 16 year old
        • EQ: Age group 16 ~ 17 year old
        • ER: 1st year of TAFE / College
        • ES: 2nd year of TAFE / College
        • ET: 3rd year of TAFE / College
        • EU: 4th year of TAFE / College
        • EV: 5th year of TAFE / College
        • EW: 1st year of University
        • EX: 2nd year of University
        • EY: 3rd year of University
        • EZ: 4th year of University
      • G: Geographical/Geological
        • G_: Non specific category information
        • GA: Archaeology
        • GB: Solar System
        • GC: Cartography
        • GD: Ecosystems
        • GE: Biospheres
        • GG: Geology
        • GH: Hydrology
        • GN: Naming of Locations
        • GO: Oceans, Lakes, large bodies of static water
        • GS: The monitoring, analysis of the changing of the Earth’s terrain
        • GW: Dynamic climatic forces
      • H: Historical
        • H_: Non specific History category information
        • HA: Precambrian - 590
        • HB: Paleozoic (500 - 590)
        • HC: Paleozoic (440 - 500)
        • HD: Paleozoic (400 - 440)
        • HE: Paleozoic (360 - 400)
        • HF: Paleozoic (280 - 360)
        • HG: Paleozoic (225 - 280)
        • HH: Mesozoic (190 - 225)
        • HI: Mesozoic (140 - 190)
        • HJ: Mesozoic (70 - 140)
        • HK: Mesozoic (60 - 70)
        • HL: Cenozoic (40 - 60)
        • HM: Cenozoic (30 - 40)
        • HN: Cenozoic (20 - 30)
        • HO: Cenozoic (10 - 20)
        • HP: Cenozoic (0 - 10)
        • HQ: Current (0 - 1500 AD)
        • HR: Current (1500 - 2000 AD)
        • HS: Current (2000 +)
      • I: Man Made (Engineering)
        • I_: Non specific category information
        • IA: Static Pneumatic Structures / Vessels
        • IB: Dynamic Pneumatic Machines
        • IC: Static Ceramic / Masonry Structures
        • ID: Dynamic Ceramic / Masonry Machines
        • IE: Static Mechanical Biological hybrid Structures
        • IF: Dynamic Mechanical Biological hybrid Machines
        • IG: Static Geological Mechanical hybrid Structures
        • IH: Dynamic Geological Mechanical hybrid Machines
        • II: Static Structures using composite materials
        • IJ: Dynamic Machines using composite materials
        • IK: Machines designed specifically for domestic use
        • IL: Machines designed specifically for commercial use
        • IM: Machines designed specifically for industrial use
        • IN: Static Liquid Structures / Vessels
        • IO: Dynamic Liquid Machines
        • IP: Dynamic Polymer Objects
        • IQ: Static Polymer Objects
        • IS: Static Metallic Objects
        • IT: Dynamic Metallic Objects
        • IU: Dynamic Tools
        • IV: Static Tools
        • IW: Static Wooden Objects
        • IX: Dynamic Wooden Objects
        • IY: Static Electrical Storage Structures
        • IZ: Dynamic Electrical Machines
      • J: Computer Software
        • J_: Non specific category information
        • JA: Apple Macintosh operating system data
        • JB: Programs designed to store and retrieve data.
        • JC: Computer Aided Design / Drafting data.
        • JD: Desktop Publishing, text and graphics to printed output.
        • JE: Programs designed to send and retrieve electronic mail.
        • JF: Programs specifically designed to manipulate files.
        • JG: Programs to design / edit electronic graphics.
        • JH: Programs designed to simulate artificial intelligence
        • JI: Internet browser and protocol data.
        • JL: Linux operating system data.
        • JM: Programs designed to output dynamic media files.
        • JO: IBM’s OS2 operating system data.
        • JP: Languages, requirements and syntax data.
        • JR: Programs designed to react and interface with real world data.
        • JS: Programs designed to manipulate tables of numeric data.
        • JT: Programs designed to manipulate text.
        • JU: Programs designed to assist in general computing procedures.
        • JV: Virus checkers, fire walls, encryption data.
        • JW: Microsoft Windows operating system data
        • JY: Programs designed to simulate real world scenarios.
      • K: Legal
        • KA: Laws, procedures and practices governing the administrative world
        • KB: Laws, procedures and practices governing the local business community
        • KC: Laws, procedures and practices specific to international commerce
        • KD: Laws, procedures and practices specific to food and drugs
        • KE: Laws, procedures and practices specific to environmental issues
        • KF: Laws, procedures and practices specific to a Federation
        • KG: Laws, procedures and practices specifically relating to family issues
        • KH: Laws, procedures and practices governing general health issues
        • KI: International specific Laws, procedures and practices
        • KK: General History of non specific laws, procedures and practices
        • KM: Laws, procedures and practices specifically relating to the medical profession
        • KN: Laws, procedures and practices specifically relating to criminal law.
        • KO: Laws, procedures and practices specific to a colony
        • KP: Laws, procedures and practices specific to political parties, policies
        • KQ: Laws, procedures and practices specific to the transfer of real estate
        • KR: Laws, procedures and practices specific to a religious belief
        • KS: Laws, procedures and practices specific to an individual state
        • KT: Laws, procedures and practices specific to general safety issues
        • KU: Laws, procedures and practices specific relating to the constitution
        • KV: Laws, procedures and practices specific to civil issues
        • KW: Laws, procedures and practices specific to common law claims
      • L: Literature
        • L_: Non specific category information
        • LA: Educational papers, theorems, thesis
        • LB: Literature specific to an individual person
        • LC: Collections, series of related works
        • LD: Definitions of Language Terminology
        • LE: General text, graphic reference literature
        • LF: Non factual entertainment literature
        • LI: Collated references to other literary resources
        • LL: Language Syntax
        • LM: Reference material specific to an individual object
        • LN: Factual literature designed for entertainment
        • LO: Literature based news media
        • LP: Regularly published literature designed for entertainment
        • LR: Dictionaries, general text based reference works
      • M: Calculus/Geometry
        • M_: Non specific category information
        • MA: Calculus of real numbers using simple operations
        • MB: Calculus using representations of real numbers, complex operations
        • MC: Study and behavior of functions
        • MD: Constant Values
        • MF: Calculations based on financial and date related formulas
        • MH: 3 Dimensional solid figures
        • MI: 2 Dimensional plane figures
        • MM: Calculations including physical quantities
        • MP: Theories of chance and probability relating to events occurring
        • MS: Calculations based on a large collection of data
        • MT: Calculations based on the triangular ratios
        • MU: Collections of mathematical data
      • N: Computer hardware
        • N_: Non specific category information
        • NA: Interface cable / port specifications
        • NB: Firmware, Flash Ram, EPROM data
        • NC: Burners, players for CD type media
        • ND: Mice, trackballs, digitisers, gameport
        • NE: X086, 68000 series processor information
        • NF: Firewire multimedia interface data
        • NG: Infra red port device and specification data
        • NH: IDE, SCSI, RLL storage media
        • NI: Standard parallel / serial Ports
        • NJ: MIDI, Internal synthesizers, sound processing
        • NK: Keyboards, touch screens, programmable pads
        • NM: Styles, capabilities, requirements of motherboards
        • NN: Visual display unit (Monitor) data
        • NO: Communication devices, protocols, interface data
        • NP: Dot Matrix, laser, bubble jet, thermal printer data
        • NQ: Types, specifications, requirements of random access memory
        • NR: Scanners, camera’s, bar-code readers
        • NS: Floppy, zip, tape
        • NT: Advanced graphic port data
        • NU: Universal serial bus connection data
        • NV: Standard video adapter data
        • NW: Wireless application protocol data
      • O: Medicine/Physiology
        • O_: Non specific category information
        • OA: Immune system analysis, disease spread, vaccine creation
        • OB: Non specific medical procedures
        • OC: Methods to reduce pain during surgical or other painful procedures
        • OD: Analysis, diagnosis, treatment of skin related diseases
        • OE: Procedures for dealing with medical emergencies
        • OF: Analysis, prevention, diagnosis, treatment of genetic disorders
        • OH: Medical data specific to babies / young children
        • OI: Analysis, diagnosis, treatment of disorders of the internal organs
        • OJ: Analysis, diagnosis, treatment of head, neck, sinus, larynx disorders
        • OK: Methods, treatments to prevent disease
        • OL: Analysis, treatment of disorders specific to eye’s, sight
        • OM: Analysis, diagnosis, treatment of mental disease, disorders
        • ON: Surgery / analysis of the nervous system
        • OO: Surgery, analysis, treatment of skeletal, tendon, muscle system
        • OP: Study of structural and physiological changes that take place in human cells
        • OQ: Surgery repairing disfigurement, birth defects by surgery
        • OR: Treatments to restore function to damaged parts of the body
        • OT: Surgery relating to the chest, heart, lungs
        • OU: Analysis, treatment of disorders to females urinary tract, males urogenital tract
        • OV: Use of radioactive materials to analyze, diagnose, treat disease
        • OY: Female reproductive system, pregnancy, childbirth
      • P: Physical Science
        • P_: Non specific category information
        • PA: Origins / evolution / current state of the Universe
        • PB: Structure and properties of atoms
        • PC: Properties / behavior of matter at extremely low temperatures
        • PD: Propagation, analysis of sound
        • PE: Electric and magnetic force fields
        • PF: Properties, behaviors of moving fluids and gases
        • PH: Properties, behaviors of elementary particles
        • PI: Forces, actions, and motions of material objects
        • PJ: Statistical methods to model the behavior of particle systems
        • PK: Structure and properties of molecules
        • PL: Study of planetary minerals
        • PM: Application of mathematical techniques to problems in physics
        • PN: Physics Structure, properties, reactions, and evolution of atomic nuclei
        • PO: Propagation, analysis of light, electromagnetic waves
        • PP: Behavior of ionised gases
        • PQ: Behavior of systems composed of small numbers of elementary particles
        • PS: Physical properties of solid materials
        • PT: Temperature, transformation of energy.
        • PU: Study of the worlds climate
        • PV: Physical Properties of Liquids
        • PW: Study of measurement practices and procedures
        • PX: General properties
      • Q: Occupational
        • Q_: Non specific category information
        • QA: Supervision, management of other professions
        • QB: Building, construction trades
        • QC: Occupations relating to supporting customers, consumers
        • QD: Occupations involved with public presentation of events
        • QE: Professions related to collating, tutoring of information
        • QF: Commercial, financial related professions
        • QG: Law, legal related professions
        • QH: Hospitality, catering related professions
        • QL: Manual labour related professions
        • QM: Manufacturing, process related professions
        • QO: Plant, machinery operator related professions
        • QP: Public service, utility professions
        • QS: Sales related professions
        • QT: Programming, design, simulation of new technology
        • QV: Professions related to providing a specific service
      • R: Sport/Leisure
        • R_: Non specific category information
        • RA: Sports played on an athletic arena
        • RB: Sports requiring a ball to participate
        • RC: Sports requiring the inclusion of a deck of cards
        • RE: Sport requiring the inclusion of probability
        • RF: Sport involving physical confrontation between one or more persons
        • RG: Sports requiring the use of gymnastic equipment
        • RH: Sports requiring a target to participate
        • RI: Sport requiring the inclusion of ice to participate
        • RK: Sport based on tactical, strategical maneuvers
        • RM: Sport requiring the inclusion of a motor vehicle
        • RO: Sport requiring a computer to participate
        • RP: Sports requiring air, wind to participate
        • RR: Application of physics to the study of the earth
        • RT: Sports requiring a weapon to participate
        • RW: Sports requiring water to participate
        • RX: Sports requiring non standard use of sporting equipment
      • S: Cultural
        • S_: Non specific category information
        • SA: Advertising media specific
        • SC: Consumption of human, physical, consumable resources
        • SE: Monetary distribution across a social platform
        • SF: Clothing design
        • SH: Labour types, demographics
        • SI: Industry types, demographics
        • SJ: Family unit definitions, lifestyles
        • SL: Distribution / designation of land
        • SM: Live Entertainment Media, performing arts
        • SN: Print media specific
        • SO: Social development issues.
        • SQ: Social Clubs, charities, societies
        • SR: Race, culture or class specific
        • SS: Transportation machinery, methods specific to a race, class, culture
        • ST: Television media specific
        • SU: Radio media specific
        • SV: Video media specific
        • SW: General World Facts
      • T: Transportation
        • T_: Non specific category information
        • TA: Vehicles having a motor and 3 or more wheels
        • TB: Motor powered sea going vessel
        • TC: Vehicles having a motor and 2 wheels
        • TD: Wind or sail powered sea going vessel
        • TE: Non vehicle specific engine / motor details
        • TF: Vehicles suspended by electromagnetism
        • TH: Rotating wing aircraft
        • TP: Fixed wing aircraft
        • TR: Vehicle for traveling along a designated track
        • TS: Vehicles for traveling outside of Earth
        • TT: Vehicle for moving loads
      • U: Musical
        • U_: Non specific category information
        • UA: Arrangement, adaptation of a composition music
        • UB: Brass instrument specific
        • UC: Creation of a musical piece
        • UD: Music sung by vocalists with no accompaniment
        • UE: Electronically instrument specific
        • UH: Events relating to musical history
        • UI: Music played by a group (excluding vocals)
        • UK: Keyboard instrument specific
        • UL: Creating, editing lyrics integrated with music
        • UO: Music played by an orchestra
        • UP: Playing of a musical instrument
        • UQ: Music played by a string quartet
        • UR: Music played by a band (including vocals)
        • US: Scoring, notation of music
        • UT: General music theory
        • UV: Vocal instrument specific
        • UW: Wind instrument specific
        • UX: Percussion instrument specific
        • UZ: String instrument specific
      • V: Energy Science
        • V_: Non specific category information
        • VA: Energy derived from magnetic sources
        • VE: Energy derived from electrical energy
        • VF: Energy derived from mining, processing fossil fuels
        • VH: Compressed fluid
        • VM: Energy derived from mechanical methods
        • VN: Energy derived from nuclear fission, fusion
        • VP: Energy created using compressed air, gas
        • VQ: Energy relating to quantum physics
        • VR: Energy derived from radio waves
        • VS: Energy derived from the sun
        • VW: Energy created from moving air
        • VZ: Energy relating to Light emissions from a laser
        • Y: Philosophical / Psychological
        • Y_: Non specific category information
        • YA: Relationship between planetary positions and humans
        • YB: Information specific to the Buddhist religion
        • YC: Information specific to the Christian religion
        • YE: Ethic specific information covering multiple religions
        • YI: Information specific to the Islamic religion
        • YJ: Information specific to the Judaic religion
        • YL: Concepts of applied logic
        • YM: Concepts dealing with the origins of myths
        • YN: Relationship between humans and numerical sequences
        • YP: Concepts dealing with the human mind
        • YQ: Concepts dealing with supernatural phenomenon
        • YS: Concepts dealing with speculative philosophy
      • Secondary Category Code
        • 3rd character
        • Code: Content [Code A - Z]
        • A: Relates specifically to a member of the animal kingdom
        • B: Relates specifically to a member of the plant kingdom
        • C: Specific Information that is used to segregate categories
        • D: Physical Dimensional Properties
        • E: Something that took place
        • F: Relates specifically to Calculations
        • G: General Data
        • H: Relates specifically to an object in the physical natural world
        • I: Class definitions
        • J: Naming of items
        • L: Information relating to a specific location
        • N: Specific conventions of the Sub Category
        • O: Relates specifically to a physical object
        • P: Relates specifically to a person or persons
        • R: Relates specifically to performing a method or procedure
        • T: Theories concerning the category
        • W: Specific laws governing the major category