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Delhi, officially the National Capital Territory ( NCT) of Delhi, is a city and a union territory of India containing New Delhi, the capital of India. Straddling the Yamuna river, but spread chiefly to the west, or beyond its right bank, Delhi shares borders with the state of Uttar Pradesh in the east and with the state of Haryana in the remaining directions. Delhi became a union territory on 1 November 1956 and the NCT in 1995. The NCT covers an area of . According to the 2011 census, the population of Delhi city proper was over 11 million, while the NCT's population was about 16.8 million.
The topography of the medieval fort Purana Qila on the banks of the river Yamuna matches the literary description of the citadel Indraprastha in the Sanskrit epic Mahabharata; however, excavations in the area have revealed no signs of an ancient built environment. From the early 13th century until the mid-19th century, Delhi was the capital of two major empires, the Delhi Sultanate and the Mughal Empire, which covered large parts of South Asia. All three UNESCO World Heritage Sites in the city, the Qutub Minar, Humayun's Tomb, and the Red Fort, belong to this period. Delhi was the early centre of Sufism and Qawwali music. The names of Nizamuddin Auliya and Amir Khusrau are prominently associated with it. The Khariboli dialect of Delhi was part of a linguistic development that gave rise to the literature of Urdu and later Modern Standard Hindi. Major Urdu poets from Delhi include Mir Taqi Mir and Mirza Ghalib. Delhi was a notable centre of the Indian Rebellion of 1857. In 1911, New Delhi, a southern region within Delhi, became the capital of the British Indian Empire. During the Partition of India in 1947, Delhi was transformed from a Mughal city to a Punjabi one, losing two-thirds of its Muslim residents, in part due to the pressure brought to bear by arriving Hindu and Sikh refugees from western Punjab.
After independence in 1947, New Delhi continued as the capital of the Dominion of India, and after 1950 of the Republic of India.
Delhi's urban agglomeration, which includes the satellite cities of Gurgaon, Noida, Greater Noida, Ghaziabad, Faridabad, and YEIDA City located in an area known as the National Capital Region (NCR), has an estimated population of over 28 million, making it the largest metropolitan area in India and the second-largest in the world (after Tokyo). Delhi ranks fifth among the Indian states and union territories in human development index, and has the second-highest GDP per capita in India (after Goa). Although a union territory, the political administration of the NCT of Delhi today more closely resembles that of a state of India, with its own legislature, high court and an executive council of ministers headed by a chief minister. New Delhi is jointly administered by the federal government of India and the local government of Delhi, and serves as the capital of the nation as well as the NCT of Delhi. Delhi is also the centre of the National Capital Region, which is an "interstate regional planning" area created in 1985. Delhi hosted the inaugural 1951 Asian Games, the 1982 Asian Games, the 1983 Non-Aligned Movement summit, the 2010 Men's Hockey World Cup, the 2010 Commonwealth Games, the 2012 BRICS summit, the 2023 G20 summit, and was one of the major host cities of the 2011 and 2023 Cricket World Cups.
The people of Delhi are referred to as Delhiites or Dilliwalas. The city is referenced in various idioms of the Northern Indo-Aryan languages. Examples include:
The form Delhi, spelled in the Latin script with the h following the l, originated under colonial rule and is an alternation of the spelling based on the Urdu name of the city (, Dehli).Syed Mahdi Husain: Bahadur Shah Zafar and the War of 1857 in Dehli. Aakar Books, Delhi 2006, ISBN 81-87879-91-2, p. LV of the preface.
The earliest architectural relics date back to the Maurya Empire period (c. 300 BCE); in 1966, an inscription of the Mauryan Emperor Ashoka (273–235 BCE) was discovered near Srinivaspuri. Remains of several major cities can be found in Delhi. The first of these was in the southern part of present-day Delhi. Tomara dynasty King Anangpal Tomar built the Lal Kot and several temples in 1052 CE. The Chauhan Rajputs under Vigraharaja IV conquered Lal Kot in the mid-12th century and renamed it Qila Rai Pithora.
For the next three hundred years, Delhi was ruled by a succession of Turkic peoples, Sayyid Dynasty and an Afghans, Lodi dynasty. They built several forts and townships that are part of the seven cities of Delhi. Delhi was a major centre of Sufism during this period. The Mamluk Sultanate (Delhi) was overthrown in 1290 by Jalal ud din Firuz Khalji (1290–1320). Under the second Khalji ruler, Alauddin Khalji, the Delhi sultanate extended its control south of the Narmada River in the Deccan. The Delhi sultanate reached its greatest extent during the reign of Muhammad bin Tughluq (1325–1351). In an attempt to bring the whole of the Deccan under control, he moved his capital to Daulatabad, Maharashtra in central India. However, by moving away from Delhi he lost control of the north and was forced to return to Delhi to restore order. The southern provinces then broke away. In the years following the reign of Firoz Shah Tughlaq (1351–1388), the Delhi Sultanate rapidly began to lose its hold over its northern provinces. Delhi was captured and sacked by Timur in 1398, who massacred 100,000 captive civilians. Delhi's decline continued under the Sayyid dynasty (1414–1451), until the sultanate was reduced to Delhi and its hinterland. Under the Afghan Lodi dynasty (1451–1526), the sultanate recovered control of Punjab and the Gangetic plain to once again achieve domination over Northern India. However, the recovery was short-lived and the sultanate was destroyed in 1526 by Babur, founder of the Mughal Empire.
The States Reorganisation Act, 1956 created the Union Territory of Delhi from its predecessor, the Chief Commissioner's Province of Delhi. The Constitution (Sixty-ninth Amendment) Act, 1991 declared the Union Territory of Delhi to be formally known as the National Capital Territory of Delhi. The Act gave Delhi its legislative assembly along Civil lines, though with limited powers.
Delhi was the primary site in the nationwide anti-Sikh pogroms of 1984, which resulted in the death of around 2,800 people in the city according to government figures, though independent estimates of the number of people killed tend to be higher. The riots were set off by the assassination of Indira Gandhi—the Prime Minister of India at the time—by her Sikh bodyguards.
In 2001, the Parliament of India building in New Delhi was attacked by armed militants, killing six security personnel. India suspected Pakistan-based Jihadist militant groups were behind the attack, which caused a major diplomatic crisis between the two countries. There were further terrorist attacks in Delhi in 2005 and 2008, resulting in a total of 92 deaths. In 2020, Delhi witnessed its worst communal violence in decades. The riots caused 53 people to be killed, two-thirds of whom were Muslims, and the rest Hindus.
In addition to the wetlands formed by the Yamuna River, Delhi continues to retain over 500 ponds (wetlands < ), that in turn support a considerable number of bird species. Delhi's ponds, despite experiencing ecological deterioration due to garbage dumping and concretisation, support the largest number of bird species known to be using ponds anywhere in the world. Existing policy in Delhi prevents the conversion of wetlands and, quite inadvertently, has led to the city's ponds becoming invaluable refugia for birds.
The National Capital Territory of Delhi covers an area of , of which is designated rural, and urban therefore making it the largest city in terms of area in the country. It has a length of and a width of . Delhi is included in India's seismic zone-IV, indicating its vulnerability to major earthquakes.
Rising air pollution level has significantly increased lung-related ailments (especially asthma and lung cancer) among Delhi's children and women. The dense smog and haze during winter results in major air and rail traffic disruptions every year. According to Indian meteorologists, the average maximum temperature during winters has declined notably since 1998 due to rising air pollution.
India's Ministry of Earth Sciences published a research paper in October 2018 attributing almost 41% of PM2.5 air pollution in Delhi to vehicular emissions, 21.5% to dust/fire and 18% to industries. The director of Centre for Science and Environment (CSE) alleged that the Society of Indian Automobile Manufacturers (SIAM) is lobbying "against the report" because it is "inconvenient" to the automobile industry. Environmentalists have also criticised the Delhi government for not doing enough to curb air pollution and to inform people about air quality issues. In 2014, an environmental panel appealed to India's Supreme Court to impose a 30% cess on diesel cars, but till date no action has been taken to penalise the automobile industry.
Most of Delhi's residents are unaware of alarming levels of air pollution in the city and the health risks associated with it. In 2020, annual average PM2.5 in the city stood at 107.6 μg/m3, which is almost 21.5 times the WHO's PM2.5 Guideline (5 μg/m3; set in September 2021). These pollution levels are estimated to reduce the life expectancy of an average person living in Delhi by almost 10.1 years.
However, , awareness, particularly among the foreign diplomatic community and high-income Indians, was noticeably increasing. Since the mid-1990s, Delhi has undertaken some measures to curb air pollution—it has the third-highest quantity of trees among Indian cities; the Delhi Transport Corporation operates the world's largest fleet of environmentally friendly compressed natural gas (CNG) buses. In 1996, the CSE started a public interest litigation in the Supreme Court of India that ordered the conversion of Delhi's fleet of buses and taxis to run on CNG and banned the use of leaded petrol in 1998. In 2003, Delhi won the United States Department of Energy's first 'Clean Cities International Partner of the Year' award for its "bold efforts to curb air pollution and support alternative fuel initiatives". The Delhi Metro has also been credited for significantly reducing air pollutants in the city.
However, according to several authors, most of these gains have been lost, especially due to stubble burning, a rise in the market share of diesel exhaust and a considerable decline in bus ridership. According to CSE and System of Air Quality Weather Forecasting and Research (SAFAR), burning of agricultural waste in nearby Punjab, Haryana and Uttar Pradesh regions results in severe intensification of smog over Delhi.
Delhi has been ranked 7th best "National Clean Air City" (under Category 1 >10L Population cities) in India according to 'Swachh Vayu Survekshan 2024 Results'
According to the World Air Quality Report 2024, Delhi remains the world's most polluted capital city.
Between 13 January 2011 and 22 May 2022, MCD was divided into three municipal corporations:
Delhi is home to the High Court of Delhi. The High Court of Delhi is the highest in the Delhi before Supreme Court. The High Court of Delhi just like the apex court and other High Courts in India is the Court of record. Delhi is also home to various District Court according to jurisdictions. Delhi have Currently seven District Courts namely Tis Hazari Court Complex, Karkardooma Court Complex, Patiala House Court Complex, Rohini Court Complex, Dwarka Courts Complex, Saket Court Complex, and Rouse Avenue Court Apart from the District Courts Delhi also have Consumer Courts, CBI Courts, Labour Courts, Revenue Courts, Army tribunals, electricity tribunals, Railway Tribunals, and other various tribunals situated according to appropriate jurisdictions.
For policing purposes Delhi is divided into fifteen police districts which are further subdivided into 95 local police station zones. Delhi currently has 180 police stations.
The Indian National Congress (Congress) formed all the governments in Delhi until the 1990s, when the Bharatiya Janata Party (BJP), led by Madan Lal Khurana, came to power. In 1998, the Congress returned to power under the leadership of Sheila Dikshit, who was subsequently re-elected for 3 consecutive terms. But in 2013, the Congress was ousted from power by the newly formed Aam Aadmi Party (AAP) led by Arvind Kejriwal forming the government with outside support from the Congress. However, that government was short-lived, collapsing only after 49 days. Delhi was then under President's rule until February 2015, after which AAP returned to power after a landslide victory, winning 67 out of the 70 seats in the Delhi Legislative Assembly. AAP held power until Feb 2025. Following assembly elections in 2025, BJP came to power.
As per the Economic survey of Delhi (2005–2006), the tertiary sector contributes 70.95% of Delhi's gross SDP followed by secondary and primary sectors with 25.20% and 3.85% contributions, respectively. Delhi's workforce constitutes 32.82% of the population, and increased by 52.52% between 1991 and 2001. Delhi's unemployment rate decreased from 12.57% in 1999–2000 to 4.63% in 2003. In December 2004, 636,000 people were registered with various employment exchange programmes in Delhi.
In 2018 the total workforce in national and state governments and the quasi-government sector was 594,000, and the private sector employed 273,000. Key service industries are information technology, telecommunications, hotels, banking, media and tourism. Construction, power, health and community services and real estate are also important to the city's economy. Delhi has one of India's largest and fastest growing retail industries. Manufacturing also grew considerably as consumer goods companies established manufacturing units and headquarters in the city. Delhi's large consumer market and the availability of skilled labour has also attracted foreign investment. In 2001, the manufacturing sector employed 1,440,000 workers and the city had 129,000 industrial units.
The city's electricity consumption is about 1,265 kWh per capita but the actual demand is higher. In Delhi power distribution is managed by TPDDL and BSES Yamuna & BSES Rajdhani since 2002, transmission of power is done by Delhi Transco Limited and Powergrid, while generation of power is by IPGCL and PPCL. The city also imports a significant quantum of power from other states.
The Delhi Fire Service runs 43 fire stations that attend about 15,000 fire and rescue calls per year. The state-owned MTNL and private enterprises such as Bharti Airtel, Vodafone Idea, Jio, and provide telephone and cell phone services to the city. Cellular coverage is available in GSM, 3G, 4G, LTE Advanced and 5G.
The Delhi Flying Club, established in 1928 with two de Havilland Moth aircraft named Delhi and Roshanara, was based at Safdarjung Airport which started operations in 1929, when it was the Delhi's only airport and the second in India. The airport functioned until 2001; however, in January 2002 the government closed the airport for flying activities because of security concerns following 9/11. Since then, the club only carries out aircraft maintenance courses and is used for helicopter rides to Indira Gandhi International Airport for VIP including the president and the prime minister.
Buses are the most popular means of road transport, catering to about 60% of Delhi's total demand. Delhi has one of India's largest bus transport systems. In 1998, the Supreme Court of India ruled that all public transport vehicles in Delhi must be fuelled by compressed natural gas (CNG) to tackle increasing vehicular pollution. The state-owned Delhi Transport Corporation (DTC) is a major bus service provider which operates the world's largest fleet of CNG-fuelled buses. In addition, cluster scheme buses are operated by Delhi Integrated Multi-Modal Transit System (DIMTS) with the participation of private concessionaires and DTC. In December 2017, the DTC and cluster buses carried over 4.19 million passengers per day. Kashmiri Gate ISBT, Anand Vihar ISBT and Sarai Kale Khan ISBT are the main bus terminals for outstation buses plying to neighbouring states. Delhi's rapid rate of economic development and population growth has resulted in an increasing demand for transport, creating excessive pressure on the city's transport infrastructure. To meet the transport demand, the State and Union government constructed a mass rapid transit system, including the Delhi Metro. Delhi Bus Rapid Transit System runs between Ambedkar Nagar and Delhi Gate. As per February 2024, Delhi has around 1,650 managed by the Delhi Transport Corporation, the highest in India and the third highest in the world after Shenzhen and Santiago.
Personal vehicles, especially cars also form a major chunk of vehicles plying on Delhi roads. , private vehicles account for 30% of the total demand for transport. Delhi has the highest number of registered cars compared to any other metropolitan city in India. Taxis, auto rickshaws, and cycle rickshaws also ply on Delhi roads in large numbers. , the number of vehicles in the metropolitan region, Delhi NCR, was 11.2 million (11.2 million). In 2008, there were 85 cars in Delhi for every 1,000 of its residents. In 2017, the number of vehicles in Delhi city alone crossed the ten million mark with the transport department of Delhi Government putting the total number of registered vehicles at 10,567,712 until 25 May of the year.
Although the Delhi Metro was built and is operated by the Delhi Metro Rail Corporation (DMRC), a state-owned company with equal equity participation of the governments of India and Delhi, it is under the administrative control of the Indian government's Ministry of Urban Development. Besides the construction and operation of the Delhi Metro, DMRC is also involved in the planning and implementation of metro rail, monorail, and high-speed rail projects in India and providing consultancy services to other metro projects in the country as well as abroad.
Urban sprawl has resulted in Delhi's urban area now being considered as extending beyond the NCT boundaries to incorporate the towns and cities of neighbouring states including Faridabad and Gurgaon in Haryana, and Ghaziabad and Noida in Uttar Pradesh, the total population of which is estimated by the United Nations to be over 28 million. According to the UN this makes Delhi urban area the world's second-largest urban area after Tokyo, although Demographia declares the Jakarta urban area to be the second-largest.
The 2011 census provided two figures for urban area population: 16,314,838 within the NCT boundary, and 21,753,486 for the Extended Urban Area. The 2021 regional plan released by the Government of India renamed the Extended Urban Area from Delhi Metropolitan Area (DMA) as defined by the 2001 plan, to Central National Capital Region (CNCR).
In the Old City, the Mughals and the Turkic rulers constructed several architecturally significant buildings, such as the Jama Masjid—India's largest mosque built in 1656 and the Red Fort. Three World Heritage Sites—the Red Fort, Qutab Minar and Humayun's Tomb—are located in Delhi. Other monuments include the India Gate, the Jantar Mantar—an 18th-century astronomical observatory—and the Purana Qila—a 16th-century fortress. The Laxminarayan Temple, Akshardham temple, Gurudwara Bangla Sahib, the Baháʼí Faith's Lotus Temple and the ISKCON temple are examples of modern architecture. Raj Ghat and associated memorials houses memorials of Mahatma Gandhi and other notable personalities. New Delhi houses several government buildings and official residences reminiscent of British colonial architecture, including the Rashtrapati Bhavan, the Secretariat, Rajpath, the Parliament of India and Vijay Chowk. Safdarjung's Tomb is an example of the Mughal gardens style. Some regal havelis (palatial residences) are in the Old City. Lotus Temple is a Baháʼí House of Worship completed in 1986. Notable for its flowerlike shape, it serves as the Mother Temple of the Indian subcontinent and has become a prominent attraction in the city. The National Museum and National Gallery of Modern Art are some of the largest museums in the country. Other museums in Delhi include the National Museum of Natural History, National Rail Museum and National Philatelic Museum.
Chandni Chowk, a 17th-century market, is one of the most popular shopping areas in Delhi for jewellery and Zari . Delhi's arts and crafts include, Zardozi—an embroidery done with gold thread—and Meenakari—the art of enamelling.
Religious festivals include Diwali (the festival of lights), Mahavir Jayanti, Guru Nanak's Birthday, Raksha Bandhan, Durga Puja, Holi, Lohri, Chauth, Krishna Janmastami, Maha Shivratri, Eid ul-Fitr, Moharram and Buddha Jayanti. The Qutub Festival is a cultural event during which performances of musicians and dancers from all over India are showcased at night, with the Qutub Minar as a backdrop. Other events such as Kite Flying Festival, International Mango Festival and Vasant Panchami (the Spring Festival) are held every year in Delhi. The Auto Expo, Asia's largest auto show, is held in Delhi biennially. The New Delhi World Book Fair, held biennially at the Pragati Maidan, is the second-largest exhibition of books in the world. Delhi is often regarded as the "Book Capital" of India because of high readership. India International Trade Fair (IITF), organised by ITPO is the biggest cultural and shopping fair of Delhi which takes place in November each year and is visited by more than 1.5 million people.
The fast living habits of Delhi's people has motivated the growth of street food outlets. A trend of dining at local is popular among the residents. High-profile restaurants have gained popularity in recent years, among the popular restaurants are the Karim Hotel, the Punjab Grill and Bukhara. The Gali Paranthe Wali (the street of fried bread) is a street in Chandni Chowk particularly for food eateries since the 1870s. Almost the entire street is occupied by fast food stalls or street vendors. It has nearly become a tradition that almost every prime minister of India has visited the street to eat paratha at least once. Other Indian cuisines are also available in this area even though the street specialises in north Indian food.
Schools and higher educational institutions in Delhi are administered either by the Directorate of Education, the NCT government or private organisations. In 2006, Delhi had 165 colleges, five medical colleges and eight engineering colleges, seven major universities and nine deemed universities.
The premier management colleges of Delhi such as Faculty of Management Studies (Delhi) and Indian Institute of Foreign Trade rank the best in India. All India Institute of Medical Sciences Delhi is a premier medical school for treatment and research. National Law University, Delhi is a prominent law school and is affiliated with the Bar Council of India. The IIT Delhi situated in Hauz Khas is a premier engineering college of India and ranks as one of the top institutes in South Asia.
Delhi Technological University (formerly Delhi College of Engineering), Indira Gandhi Delhi Technical University for Women (formerly Indira Gandhi Institute of Technology), Indraprastha Institute of Information Technology, Netaji Subhas University of Technology (formerly Netaji Subhas Institute of Technology), Guru Gobind Singh Indraprastha University and National Law University, Delhi are the only state universities. Delhi University, Jawaharlal Nehru University and Jamia Millia Islamia are the central universities, and Indira Gandhi National Open University is for distance education. , about 16% of all Delhi residents possessed at least a college graduate degree.
According to the Directorate of Education and GNCTD the following languages are taught in schools in Delhi under the three-language formula:
Print journalism remains a popular news medium in Delhi. The city's Hindi newspapers include Navbharat Times, Hindustan Dainik, Punjab Kesari, Pavitra Bharat, Dainik Jagran, Dainik Bhaskar, Amar Ujala and Dainik Desbandhu. Among the English language newspapers, the Hindustan Times, with a daily circulation of over a million copies, is the single largest daily. Other major English newspapers include The Times of India, The Hindu, The Indian Express, Business Standard, The Pioneer, The Statesman, and The Asian Age. Regional language newspapers include the Malayalam daily Malayala Manorama and the Tamil language dailies Dinamalar and Dinakaran. Qaumi Duniya Daily was a local Urdu newspaper, which has since moved online.
Radio is a less popular mass medium in Delhi, although FM radio has gained popularity since the inauguration of several new stations in 2006. A number of state-owned and private radio stations broadcast from Delhi.
Delhi hosted the ninth Asian Games for the second time in 1982 from 19 November to 4 December. This was the second time the city has hosted the Asian Games and was also the first Asian Games to be held under the aegis of the Olympic Council of Asia. A total of 3,411 athletes from 33 National Olympic Committees participated in these games, competing in 196 events in 21 sports and 23 disciplines. The Jawaharlal Nehru Stadium, which has a capacity of 60,000 people, was built purposely for the event and hosted its opening ceremony.
Delhi hosted the Nineteenth Commonwealth Games in 2010, which ran from 3 to 14 October and was the largest sporting event held in India. The opening ceremony of the 2010 Commonwealth Games was held at the Jawaharlal Nehru Stadium, the main stadium of the event, in New Delhi at 7:00 pm Indian Standard Time on 3 October 2010. The ceremony featured over 8,000 performers and lasted for two and a half hours. It is estimated that were spent to produce the ceremony. Events took place at 12 competition venues. 20 training venues were used in the Games, including seven venues within Delhi University. The rugby stadium in Delhi University North Campus hosted rugby games for Commonwealth Games.
Cricket and football are the most popular sports in Delhi. There are several cricket grounds, or , located across the city. The Arun Jaitley Stadium (known commonly as the Kotla) is one of the oldest cricket grounds in India and is a venue for international cricket matches. It is the home ground of Delhi cricket team and the Indian Premier League franchise Delhi Capitals. The Delhi cricket team represents the city in the Indian domestic tournaments. It has produced several world-class international cricketers such as Virender Sehwag, Virat Kohli, Gautam Gambhir, Madan Lal, Chetan Chauhan, Shikhar Dhawan, Ishant Sharma, Manoj Prabhakar and Bishan Singh Bedi to name a few. The Railways and Services cricket teams of domestic circuit also play their home matches in Delhi, at the Karnail Singh Stadium and the Palam A Stadium, respectively.
Ambedkar Stadium, a football stadium in Delhi which holds 21,000 people, was the venue for the Indian football team's World Cup qualifier against UAE on 28 July 2012. Delhi hosted the Nehru Cup in 2007 and 2009, in both of which India defeated Syria 1–0. Delhi's professional association football club Delhi FC competes in I-League. In the Elite Football League of India, Delhi's first professional American football franchise, the Delhi Defenders played its first season in Pune. Buddh International Circuit in Greater Noida, a suburb of Delhi, formerly hosted the Formula 1 Indian Grand Prix.
| + !Club !Sport !League/Championship !Homeground !Founded | ||||
| Dabang Delhi | Kabaddi | Pro Kabaddi League | Thyagaraj Sports Complex | 2014 |
| Delhi Dashers | Badminton | Premier Badminton League | Siri Fort Sports Complex | 2016 |
| Delhi Defenders | American football | Elite Football League of India | Defenders Stadium | 2011 |
| Delhi Hurricanes Rugby Football Club | Rugby union | All India & South Asia Rugby Tournament | Vasant Kunj Sports Complex | 2004 |
| Delhi Waveriders | Field hockey | Hockey India League | Shivaji Hockey Stadium | 2011 |
| Delhi Capitals | Cricket | Indian Premier League | Arun Jaitley Cricket Stadium | 2008 |
| Delhi FC | Football | I-League | Ambedkar Stadium | 1994 |
| Delhi SG Pipers | Field hockey | Hockey India League | Shivaji Hockey Stadium | 2024 |
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