Aggressive behavior in animals    [May Subd Geog] CHANGE GEOG    [sp2021056590]

BT Aggressiveness DELETE FIELD

Machine-derived authority record. DELETE FIELD

Here are entered works on the aggressive behavior in animals that may cause harm. Assign an additional heading for the type of animal, if appropriate. Fictional works on the aggressive behavior of anthropomorphic animals are entered under Aggressiveness. ADD FIELD

Animal chemical defenses    [May Subd Geog] CHANGE GEOG    [sp2021057472]

SA subdivision Chemical defenses under individual animals and groups of animals, e.g. Fishes--Chemical defenses DELETE FIELD

UF Chemical defenses, Animal DELETE FIELD

BT Animal chemical ecology DELETE FIELD

Machine-derived authority record. DELETE FIELD

Here are entered works on chemical substances produced by animals as a defense mechanism. Assign an additional heading for the type of animal, if appropriate. Fictional works on chemical defenses of anthropomorphic animals are assigned a heading for the type of chemical, e.g., Venom. ADD FIELD

Animal feces    [May Subd Geog]    [sp2026050171]

QL768 (Zoology)

UF Animal droppings

UF Animal dung

UF Animal excrement

UF Animal fecal matter

UF Animal poop

UF Animal scat (Feces)

UF Animal stool (Feces)

UF Animals--Droppings

UF Animals--Feces

BT Animal tracks

BT Feces

Here are entered works on the fecal matter expelled from animals. Assign an additional heading for the type of animal, if applicable. Fictional works on the feces of anthropomorphic animals are entered under Feces.

Animal nutrition    [May Subd Geog] CHANGE GEOG    [sp2021054067]

SA subdivision Nutrition under individual animals and groups of animals, e.g. Cattle--Nutrition; Fishes--Nutrition DELETE FIELD

Machine-derived authority record. DELETE FIELD

Here are entered works on the nutrition and diet of wild animals, domestic animals, and livestock. Assign an additional heading for the type of animal, if applicable. Fictional works on the nutrition and diet of anthropomorphic animals are assigned headings intended for humans, e.g., Nutrition, Food habits, Diet, etc. ADD FIELD

Animal transportation    [May Subd Geog]    [sp2026050172]

SF89 (Animal culture)

UF Animals--Transportation

BT Transportation

Here are entered works on the transportation of animals via air, sea, automobile, railroad, etc. Assign additional headings for the type of animal and/or mode of transportation, if appropriate. Fictional works on transportation of anthropomorphic animals are entered under a heading for the specific type of transportation or travel, e.g., Buses, Railroad travel, etc.

Animal weapons    [May Subd Geog] CHANGE GEOG    [sp2021050748]

QL940-QL943 DELETE FIELD

QL940 (Zoology) ADD FIELD

SA specific animal weapons, e.g. Antlers; Horns DELETE FIELD

UF Animals--Weapons ADD FIELD

Machine-derived authority record. DELETE FIELD

Here are entered works on the traits animals use to cause physical harm to others. Assign an additional heading for the type of weapon and/or animal, if appropriate. Fictional works on the weapons of anthropomorphic animals are assigned a heading for the specific type of trait, e.g., Antlers. ADD FIELD

Animals--Air transportation CANCEL HEADING    [sp 96004768 ]

This authority record has been deleted because the subject heading is covered by the subject heading Animal transportation (DLC)sj2026050172.

Animals--Play behavior CHANGE HEADING

Play behavior in animals    [May Subd Geog] ADD GEOG    [sp 96004773 ]

QL763.5 (Zoology)

UF Animal play behavior

UF Animals--Play behavior [Former heading]

UF Play in animals

BT Animal behavior

Here are entered works on the spontaneous, voluntary, and enjoyable play behavior of animals. Assign an additional heading for the type of animal, if appropriate. Fictional works on the play behavior of anthropomorphic animals are entered under Play.

Heading changed from Animals--Play behavior to Play behavior in animals in May 2026

Animals--Sleep behavior CHANGE HEADING

Sleep behavior in animals    [May Subd Geog] ADD GEOG    [sp 96004774 ]

QL755.3-QL755.5 (Zoology)

UF Animals--Sleep behavior [Former heading]

UF Sleep patterns in animals

BT Animal behavior

Here are entered works on the patterns and practices associated with an animal's sleep. Assign an additional heading for the type of animal, if applicable. Fictional works on the sleep behavior of anthropomorphic animals are assigned headings intended for humans, e.g., Sleep, Naps (Sleep), Bedtime, etc.

Heading changed from Animals--Sleep behavior to Sleep behavior of animals in May 2026.

Anniversaries    [May Subd Geog] CHANGE GEOG    [sp2021052286]

AS7 DELETE FIELD

SA subdivision Anniversaries, etc. under names of countries, cities, etc., individual persons, and corporate bodies, and under historic and social movements, historic events, classes of persons, and ethnic groups; and subdivision Centennial celebrations, etc. under names of countries, cities, etc., and individual corporate bodies, and under historic events DELETE FIELD

RT Days DELETE FIELD

RT Festivals DELETE FIELD

RT Holidays DELETE FIELD

BT Days ADD FIELD

Machine-derived authority record. DELETE FIELD

150

Birthdays    [May Subd Geog] CHANGE GEOG    [sp2021050123]

360

SA subdivision Birth under names of individual persons DELETE FIELD

550

BT Days DELETE FIELD

550

RT Birthflowers DELETE FIELD

667

Machine-derived authority record. DELETE FIELD

Barbary lions    [May Subd Geog]    [sp2025050335]

QL737.C23 (Zoology)

UF Asiatic lions

UF Atlas lions

UF Barbary lion

UF Lions, Asiatic

UF Lions, North African

UF North African lions

UF Panthera leo kamptzi

UF Panthera leo leo

UF Panthera leo persica

UF Panthera leo senegalensis

BT Extinct animals

BT Lions

When this heading is assigned, the second subject heading Lions is also assigned: 1. Barbary lions. 2. Lions

Basant Festival    [May Subd Geog] CHANGE GEOG    [sp2021061181]

UF Basant Festival of Kites ADD FIELD

UF Basant Kite Festival ADD FIELD

UF Basant Panchami ADD FIELD

UF Saraswati Puja ADD FIELD

UF Shree Panchami ADD FIELD

UF Vasant Panchami ADD FIELD

BT Festivals--Pakistan DELETE FIELD

BT Hindu fasts and feasts ADD FIELD

BT Sikh fasts and feasts ADD FIELD

BT Spring festivals ADD FIELD

Machine-derived authority record. DELETE FIELD

Canada lynxes    [May Subd Geog]    [sp2025050336]

QL737.C23 (Zoology)

UF Alaskan lynx

UF Alaskan lynxes

UF American lynx

UF American lynxes

UF Canada lynx

UF Canadian lynx

UF Canadian lynxes

UF Lynx, Alaskan

UF Lynx, American

UF Lynx, Canada

UF Lynx canadensis

UF Lynx, Newfoundland

UF Lynxes, Alaskan

UF Lynxes, American

UF Lynxes, Canada

UF Lynxes, Canadian

UF Lynxes, Newfoundland

UF Newfoundland lynx

UF Newfoundland lynxes

BT Lynx (Genus)

BT Lynxes

When this heading is assigned, the second subject heading Lynx (Genus) is also assigned: 1. Canada lynxes. 2. Lynx (Genus)

Cannibalism in animals    [May Subd Geog] CHANGE GEOG    [sp2021057976]

QL756.57 DELETE FIELD

QL756.57 (Zoology) ADD FIELD

SA subdivision Cannibalism under individual animals and groups of animals, e.g. Fishes--Cannibalism DELETE FIELD

UF Cannibalism (Animals) [Former heading] DELETE FIELD

UF Animal cannibalism ADD FIELD

UF Cannibalism (Animals) ADD FIELD

BT Animals--Food DELETE FIELD

BT Animal food ADD FIELD

BT Cannibalism ADD FIELD

Machine-derived authority record. DELETE FIELD

Here are entered works on the cannibalistic behavior in animals. Assign an additional heading for the type of animal, if appropriate. Fictional works on the cannibalistic behavior of anthropomorphic animals are entered under Cannibalism. ADD FIELD

Carnival    [May Subd Geog] CHANGE GEOG    [sp2021052915]

GT4180-GT4299 DELETE FIELD

GT4180-GT4296 (Manners and customs) ADD FIELD

UF Fasnacht DELETE FIELD

UF Fastnacht DELETE FIELD

UF Mardi Gras (Festival) DELETE FIELD

UF Pre-Lent festivals ADD FIELD

RT Masks DELETE FIELD

RT Shrove Tuesday DELETE FIELD

BT Christian fasts and feasts ADD FIELD

Machine-derived authority record. DELETE FIELD

150

Mardi Gras    [May Subd Geog] ADD GEOG    [sp 96005933 ]

450

UF Fat Tuesday ADD FIELD

450

UF Shrove Tuesday ADD FIELD

550

BT Carnival ADD FIELD

150

Electoral corruption    [May Subd Geog]    [sp2026050090]

053

JF1083 (Political institutions and public administration (General))

450

UF Election corruption

450

UF Election crimes

450

UF Election fraud

450

UF Elections--Corrupt practices

450

UF Electoral fraud

550

BT Corruption

680

Here are entered works on corrupt practices in elections. Fictional works on corrupt practices in elections are assigned two headings: 1. Elections. 2. Corruption.

150

Fraud    [May Subd Geog] CHANGE GEOG    [sp2021054399]

053

HV6691-HV6699 DELETE FIELD

053

HV6691-HV6699 (Social pathology) ADD FIELD

450

UF Commercial fraud DELETE FIELD

450

UF Trickery ADD FIELD

550

BT Commercial crimes DELETE FIELD

550

RT Impostors and imposture DELETE FIELD

550

BT Crime ADD FIELD

550

RT Corruption ADD FIELD

550

RT Impersonation ADD FIELD

667

Machine-derived authority record. DELETE FIELD

Droughts    [May Subd Geog] CHANGE GEOG    [sp2021051990]

QC929.2-QC929.28 DELETE FIELD

QC929.2-QC929.28 (Physics) ADD FIELD

SA subdivision Effect of drought on under individual animals and groups of animals, e.g. Cattle--Effect of drought on DELETE FIELD

UF Drought DELETE FIELD

UF Drouth DELETE FIELD

Machine-derived authority record. DELETE FIELD

Droughts--United States    [Not Subd Geog]    [sp2026050252]

Dust Bowl Era, 1931-1939    [May Subd Geog] CHANGE GEOG    [sp2021055359]

Machine-derived authority record. DELETE FIELD

Dust storms    [May Subd Geog] CHANGE GEOG    [sp2021053106]

QC958-QC959 DELETE FIELD

QC958-QC959 (Physics) ADD FIELD

BT Wind erosion DELETE FIELD

Machine-derived authority record. DELETE FIELD

Dust storms--United States    [Not Subd Geog]    [sp2026050253]

Eared owls    [May Subd Geog]    [sp2025050376]

QL696.S83 (Zoology)

UF Asio

UF Asio owls

BT Owls

Examples under Long-eared owls; Short-eared owls

150

Long-eared owls    [May Subd Geog]    [sp2021056014]

450

UF Cat owls ADD FIELD

450

UF Lesser horned owls ADD FIELD

450

UF Northern long-eared owls ADD FIELD

450

UF Wilson's owls ADD FIELD

550

BT Owls DELETE FIELD

550

BT Eared owls ADD FIELD

680

When this heading is assigned, the second subject heading Owls is also assigned: 1. Long-eared owls. 2. Owls. DELETE FIELD

680

When this heading is assigned, the second subject heading Eared owls is also assigned: 1. Long-eared owls. 2. Eared owls. ADD FIELD

150

Short-eared owls    [May Subd Geog]    [sp2025050377]

053

QL696.S83 (Zoology)

450

UF Asio flammeus

450

UF Bog owls

450

UF Flat-faced owls

450

UF Marsh owls

450

UF Prairie owls

450

UF Short-eared owl

450

UF Strix flammeus

550

BT Eared owls

680

When this heading is assigned, the second subject heading Eared owls is also assigned: 1. Short-eared owls. 2. Eared owls.

Earless owls    [May Subd Geog]    [sp2025050373]

QL696.S83 (Zoology)

UF Cicabba

UF Strix

UF Wood owls

BT Owls

Examples under Barred owls; Great gray owls; Spotted owls

150

Barred owls    [May Subd Geog]    [sp2025050374]

053

QL696.S83 (Zoology)

450

UF Barred owl

450

UF Black-eyed owls

450

UF Bottom owls

450

UF Crazy owls

450

UF Eight-hooter owls

450

UF Hoot owls

450

UF Laughing owls

450

UF Mexican barred owls

450

UF Northern barred owls

450

UF Barred owls, Mexican

450

UF Striped owls

450

UF Strix varia

550

BT Earless owls

550

BT Forest birds

680

When this heading is assigned, the second subject heading Earless owls is also assigned: 1. Barred owls. 2. Earless owls.

150

Great gray owls    [May Subd Geog]    [sp2021059112]

450

UF Clouded owls ADD FIELD

450

UF Common barn owls ADD FIELD

450

UF Gray owls ADD FIELD

450

UF Grey owls ADD FIELD

450

UF Lapland owls ADD FIELD

450

UF Lapp owls ADD FIELD

550

BT Owls DELETE FIELD

550

BT Earless owls ADD FIELD

550

BT Forest birds ADD FIELD

680

When this heading is assigned, the second subject heading Owls is also assigned: 1. Great gray owls. 2. Owls. DELETE FIELD

680

When this heading is assigned, the second subject heading Earless owls is also assigned: 1. Great gray owls. 2. Earless owls. ADD FIELD

150

Spotted owls    [May Subd Geog]    [sp2021055216]

550

BT Owls DELETE FIELD

550

BT Earless owls ADD FIELD

550

BT Forest birds ADD FIELD

550

BT Nocturnal animals ADD FIELD

680

When this heading is assigned, the second subject heading Owls is also assigned: 1. Spotted owls. 2. Owls. DELETE FIELD

680

When this heading is assigned, the second subject heading Earless owls is also assigned: 1. Spotted owls. 2. Earless owls. ADD FIELD

681

Example under Northern spotted owls ADD FIELD

150

Northern spotted owls    [May Subd Geog]    [sp2025050375]

053

QL696.S83 (Zoology)

450

UF Northern spotted owl

450

UF Strix occidentalis caurina

550

BT Spotted owls

680

When this heading is assigned, the second subject heading Spotted owls is also assigned: 1. Northern spotted owls. 2. Spotted owls.

Extrasensory perception in animals    [May Subd Geog] CHANGE GEOG    [sp2021052581]

QL785.3 DELETE FIELD

QL785.3 (Zoology) ADD FIELD

SA subdivision Psychic aspects under individual animals and groups of animals, e.g. Cattle--Psychic aspects; Fishes--Psychic aspects DELETE FIELD

UF Animal ESP DELETE FIELD

UF Anpsi DELETE FIELD

UF Parapsychology and animals [Former heading] DELETE FIELD

UF Animal ESP (Extrasensory perception) ADD FIELD

UF ESP in animals ADD FIELD

UF Paranormal cognition in animals ADD FIELD

UF Sixth sense in animals ADD FIELD

Machine-derived authority record. DELETE FIELD

Here are entered works on the ability of animals to perceive information such as danger, upcoming events, or human thoughts independently of the known five senses. Assign an additional heading for the type of animal, if applicable. Fictional works on the extrasensory perception in anthropomorphic animals are entered under Extrasensory perception or Ability. ADD FIELD

Familial behavior in animals    [May Subd Geog] CHANGE GEOG    [sp2021056466]

QL761.5 DELETE FIELD

QL761.5 (Zoology) ADD FIELD

Machine-derived authority record. DELETE FIELD

Here are entered works on the patterns, dynamics, and interactions within animal family units. Assign an additional heading for the type of animal, if appropriate. Fictional works on the familial behavior of anthropomorphic animals are assigned headings intended for humans, e.g., Family life. ADD FIELD

Family festivals CHANGE HEADING

Family celebrations    [May Subd Geog] CHANGE GEOG    [sp2021056545]

UF Family festivals [Former heading]

BT Manners and customs

Festivals    [May Subd Geog] CHANGE GEOG    [sp2021050312]

LB3560-LB3575 (Educational) DELETE FIELD

LB3560-LB3575 (Theory and practice of education) ADD FIELD

RT Anniversaries DELETE FIELD

RT Fasts and feasts DELETE FIELD

RT Pageants DELETE FIELD

RT Processions DELETE FIELD

Machine-derived authority record. DELETE FIELD

Food festivals    [May Subd Geog] CHANGE GEOG    [sp2021056034]

UF Food fairs ADD FIELD

Machine-derived authority record. DELETE FIELD

Foster care of animals    [May Subd Geog] CHANGE GEOG    [sp2021061590]

UF Animal fostering ADD FIELD

UF Pet fostering ADD FIELD

Machine-derived authority record. DELETE FIELD

Here are entered works on the temporary care humans provide animals, including food, shelter, socialization, and medical care. Assign an additional heading for the type of animal, if appropriate. Fictional works on the foster care of anthropomorphic animals are entered under Foster home care. ADD FIELD

Fourth of July    [May Subd Geog] ADD GEOG    [sp 96005545 ]

UF Fourth of July celebrations DELETE FIELD

UF Independence Day (U.S.) ADD FIELD

UF July Fourth ADD FIELD

BT Holidays--United States ADD FIELD

Harvest festivals    [May Subd Geog] CHANGE GEOG    [sp2021051227]

GT4380-GT4499 DELETE FIELD

GT4380-GT4496 (Manners and Customs) ADD FIELD

Machine-derived authority record. DELETE FIELD

150

Oktoberfest    [May Subd Geog] CHANGE GEOG    [sp2021059531]

053

GT4380 DELETE FIELD

053

GT4380-GT4496 (Manners and customs) ADD FIELD

667

Machine-derived authority record. DELETE FIELD

Hatch Chile Festival, Hatch, N.M.    [Not Subd Geog]    [sp2021056031]

Machine-derived authority record. DELETE FIELD

150

Harvest festivals--New Mexico    [Not Subd Geog]    [sp2026050246]

Horseradish    [May Subd Geog]    [sp2026050233]

SB307.H6 (Plant culture)

UF Armoracia rusticana

UF Horse-radish

UF Horseradishes

BT Mustard family (Plants)

Kwanzaa    [May Subd Geog] CHANGE GEOG    [sp2021052813]

GT4403 DELETE FIELD

BT Harvest festivals--United States DELETE FIELD

BT Festivals--United States ADD FIELD

Machine-derived authority record. DELETE FIELD

150

Festivals--United States    [Not Subd Geog]    [sp2026050247]

Mid-autumn Festival    [May Subd Geog] CHANGE GEOG    [sp2021054378]

UF Chung-chʻiu Festival DELETE FIELD

UF Autumn Moon Festival ADD FIELD

UF Zhongqiu Jie ADD FIELD

UF Mooncake Festival ADD FIELD

BT Festivals--China DELETE FIELD

BT Harvest festivals ADD FIELD

Machine-derived authority record. DELETE FIELD

Mumming    [May Subd Geog] CHANGE GEOG    [sp2021056784]

GT4985 (Christmas customs) DELETE FIELD

PR635.F6 (English folk-drama) DELETE FIELD

PR979-PR981 (English literature) ADD FIELD

UF Mummering DELETE FIELD

UF Mummery ADD FIELD

BT Carnival DELETE FIELD

BT Masks DELETE FIELD

RT Masquerades DELETE FIELD

Machine-derived authority record. DELETE FIELD

Pageants    [May Subd Geog] CHANGE GEOG    [sp2021056604]

PN3202-PN3299 (Theater) DELETE FIELD

PN3202-PN3299 (Drama) ADD FIELD

BT Amateur plays DELETE FIELD

RT Festivals DELETE FIELD

RT Processions DELETE FIELD

Machine-derived authority record. DELETE FIELD

Parades    [May Subd Geog] CHANGE GEOG    [sp2021050137]

GT3980-GT4096 DELETE FIELD

GT3980-GT4096 (Manners and customs) ADD FIELD

UF Pomp DELETE FIELD

BT Pageants DELETE FIELD

Machine-derived authority record. DELETE FIELD

Here are entered works on large public processions of a festive nature, usually including a marching band, and held in honor of an anniversary, person or event. Works on the action of a group of persons moving or marching along in orderly succession in a formal or ceremonial way are entered under Processions. DELETE FIELD

Here are entered works on large public processions of a festive nature, usually including a marching band, and held in honor of an anniversary, person or event. Works on the action of an organized group moving or marching along in formal or ceremonial way are entered under Processions. ADD FIELD

Processions    [May Subd Geog]    [sp2026050228]

GT3980-GT4096 (Manners and customs)

BT Rites and ceremonies

Here are entered works on the action of an organized group moving or marching along in formal or ceremonial way. Works on large public processions of a festive nature, usually including a marching band, and held in honor of an anniversary, person or event, are entered under Parades.

Note under Parades

Rain frogs    [May Subd Geog]    [sp2026050257]

QL668.E225 (Zoology)

UF Breviceps

UF Short-headed frogs

UF Short-heads (Amphibians)

BT Anurans

BT Burrowing animals

BT Frogs

Renaissance fairs    [May Subd Geog] CHANGE GEOG    [sp2021061132]

UF Ren faires ADD FIELD

Machine-derived authority record. DELETE FIELD

Spring festivals    [May Subd Geog] CHANGE GEOG    [sp2021051843]

GT4504-GT4504.995 DELETE FIELD

GT4504-GT4504.995 (Manners and customs) ADD FIELD

UF Vernal equinox festivals [Former heading] DELETE FIELD

UF Vernal equinox festivals ADD FIELD

Machine-derived authority record. DELETE FIELD

150

Nawrūz (Festival) CHANGE HEADING

150

Nowruz (Festival)    [May Subd Geog] CHANGE GEOG    [sp2021061576]

053

BP387.N38 (Islam)

450

UF Naurūz (Festival)

450

UF Nawrūz (Festival) [Former heading]

450

UF Nō Rūz (Festival)

450

UF Nōgrūz (Festival)

450

UF Norooz (Festival)

450

UF Nōrūz (Festival)

550

BT New Year

550

BT Spring festivals

680

Here are entered works on the festival marking the beginning of the year at the spring equinox that originated in Iran and is celebrated by peoples of Central Asia and the Middle East.

688

Heading changed from Nawrūz (Festival) to Nowruz (Festival) in May 2026.

Summer festivals    [May Subd Geog] CHANGE GEOG    [sp2021057951]

GT4505-GT4505.995 DELETE FIELD

GT4505-GT4505.995 (Manners and customs) ADD FIELD

Machine-derived authority record. DELETE FIELD

Tunisian Revolution, Tunisia, 2010-2011    [Not Subd Geog]    [sp2026050241]

UF Bouzid Revolt, Tunisia, 2010-2011

UF Jasmine Revolution, Tunisia, 2010-2011

UF Sidi Bouzid Revolt, Tunisia, 2010-2011

UF Tunisia--History--Demonstrations, 2010-2011

UF Tunisia--History--Jasmine Revolution, 2010-2011

UF Tunisia--History--Revolution, 2010-2011

UF Tunisian protests, Tunisia, 2010-2011

UF Tunisian Revolution of Dignity, Tunisia, 2010-2011

UF Tunisian riots, Tunisia, 2010-2011

UF Tunisian unrest, Tunisia, 2010-2011

UF Tunisian uprising, Tunisia, 2010-2011

Water parks    [May Subd Geog]    [sp2026050234]

UF Waterparks

BT Amusement parks

Winter festivals    [May Subd Geog] CHANGE GEOG    [sp2021052028]

UF Winter carnivals DELETE FIELD

Machine-derived authority record. DELETE FIELD

Wintering in animals    [May Subd Geog]    [sp2026050173]

UF Animals--Wintering

UF Overwintering in animals

UF Wintering-over in animals

BT Animal behavior

BT Animal ecology

Here are entered works on the process of animals sheltering or resting through the cold season. Assign an additional heading for the type of animal, if applicable. Fictional works on the wintering of anthropomorphic animals are assigned the heading Winter.

150

Hibernation    [May Subd Geog] CHANGE GEOG    [sp2021053389]

053

QL755 DELETE FIELD

053

QL755 (Zoology) ADD FIELD

360

SA subdivision Hibernation under individual animals and groups of animals, e.g. Fishes--Hibernation DELETE FIELD

450

UF Animals--Hibernation ADD FIELD

550

BT Animals--Wintering DELETE FIELD

550

BT Dormancy (Biology) DELETE FIELD

550

BT Wintering in animals ADD FIELD

667

Machine-derived authority record. DELETE FIELD

680

Here are entered works on the inactive or dormant state animals adopt to survive harsh winter conditions or food scarcity. Assign an additional heading for the type of animal, if appropriate. Fictional works on the hibernation of anthropomorphic are assigned headings intended for humans, e.g., Sleep. ADD FIELD