Question: What type of art started as a flip book in early times but has been used to make films such as "Life is Cool" in 2008?

full_context: Document 1: Waking Life: Waking Life is a 2001 American adult animated docufiction film, directed by Richard Linklater. It is the first animated film released by Fox Searchlight Pictures, and to date is the only animated film released by Fox Searchlight, though it will be joined by upcoming stop-motion film "Isle of Dogs". The film explores a wide range of philosophical issues including the nature of reality, dreams, consciousness, the meaning of life, free will, and existentialism. "Waking Life" is centered on a young man who wanders through a succession of dream-like realities wherein he encounters a series of individuals who engage in insightful philosophical discussions.
Document 2: Beautiful (2008 film): Beautiful () is a 2008 South Korean film, and the debut feature of director Juhn Jai-hong. The film is based on an original story by Kim Ki-duk.
Document 3: He Was Cool: He Was Cool (; lit. "That Guy was Cool") is a 2004 South Korean film based on the same-titled 2001 Internet novel written by Guiyeoni. The film was released in South Korean cinemas on July 23, 2004 and was the 35th most attended film of the year with 800,000 admissions.
Document 4: Anime and manga fandom: Anime and manga fandom (otherwise known as fan community) is a worldwide community of fans of anime and manga. Anime includes animated series, films and videos, while manga includes Manga, graphic novels, drawings, and related artwork. They have their origin in Japanese entertainment, but the style and culture has spread worldwide since its introduction into the West in the 1990s.
Document 5: Outsourcing of animation: Outsourcing of animation has become widespread. Many entertainment giants such as The Walt Disney Company and IMAX are beginning to outsource an increasing amount of their animation production to Asian countries, particularly India, while other companies are outsourcing animation from India for commercials and computer games. A factor making India an outsourcing destination for animation films is its vast base of English speaking workforce. Animation, which requires understanding of the English language in order to lip-sync the animated media to the audio dialogue, benefits from this particular talent that the Indian workforce possesses. A number of animation companies in the country are also creating skilled manpower for the animation market through various training programs.
Document 6: Cool and the Crazy: Cool and the Crazy is a 1994 American drama film written and directed by Ralph Bakshi and starring Jared Leto and Alicia Silverstone. The story revolves around an unhappily married couple in the late 1950s who both lead separate affairs. The film was Bakshi's first feature-length live-action film, being primarily known as a director of animated films which heavily utilize live-action sequences, such as "Fritz the Cat", "Heavy Traffic", "Wizards", "American Pop" and "The Lord of the Rings".
Document 7: Blade of the Phantom Master: Blade of the Phantom Master (新暗行御史 , "Shin Angyō Onshi" , 신암행어사 "Shin amhaengosa") , translated as "New Royal Secret Commissioner", is a serial manhwa and anime film created by Youn In-wan and illustrated by Yang Kyung-il. The series takes place in a world reminiscent of ancient Korea, and follows the Korean-folktale-inspired adventures of Munsu, one of the few remaining guardians against corruption and tyranny, as he seeks to find those responsible for the destruction of his country. It was serialized from 2001 to 2007 in South Korea (as "Shin amhaengosa") and in Japan (as "Shin Angyō Onshi"), and was adapted into an animated theatrical-release film in 2004 in a first-of-its-kind collaboration between Japan and South Korea. In 2007, an English-language version of the film was released in the United States by ADV Films (licensed for $130,000) under the title "Blade of the Phantom Master." In 2008, the anime became one of over 30 ADV titles transferred to Funimation.
Document 8: My Sassy Girl (2008 film): My Sassy Girl is a 2008 American remake of the 2001 South Korean romantic-comedy "My Sassy Girl". It stars Elisha Cuthbert and Jesse Bradford and was directed by Yann Samuell. Both films are based on a true story told in a series of blog posts written by Kim Ho-sik, who later adapted them into a fictional novel. The film is set in New York City's Central Park and Upper East Side. Samuell, describes the film as "a fable about destiny, " while Bradford described it as "a romantic comedy about how they pull each other to a more healthy place by virtue of their relationship."
Document 9: Jin Kim (animator): Jin Kim (, Korean name: Kim Sang-jin) is a South Korean animator. He has been working as animator at the Walt Disney Animation Studios since 1995. He is also first Korean to be working for Walt Disney Animation Studios.
Document 10: A Scanner Darkly (film): A Scanner Darkly is a 2006 American animated science-fiction thriller film directed by Richard Linklater, based on the novel of the same name by Philip K. Dick. The film tells the story of identity and deception in a near-future dystopia constantly under intrusive high-tech police surveillance in the midst of a drug addiction epidemic. The film was shot digitally and then animated using interpolated rotoscope, an animation technique in which animators trace over the original footage frame by frame, for use in live-action and animated films, giving the finished result a distinctive animated look. It was distributed by Warner Independent Pictures.
Document 11: Heewon Entertainment: Heewon Entertainment Co, Ltd. (hangul: Korean: ㈜희원엔터테인먼트 ) is a South Korea's toy, animation and entertainment company. headquartered in Guro-Dong Guro-Gu Seoul, Korea. established in 1994. It is a Korean animation and Japanese animation products. also produces an anime review entertainment, Korea; as well as a Korean-language version of Battle Beadman, Fire Beadman and Beyblade animation, and a called Jang Geum's Dream. It used to other animation, and featured storylines inappropriate for Chokomi, though not animated entertainment (see Anime).
Document 12: Korean animation: The art of Korean animation (Korean: 한국 애니메이션 ), or Aeni (Korean: 한국 애니 ) has gone from hand-held flip books in early times to studios that produce work for major American and Japanese animation companies.
Document 13: Life Is Cool (film): Life Is Cool (Korean: 그녀는 예뻤다 ; rr: "Geunyeoneun Yeppeotda"; lit. "She Was Beautiful") is a 2008 South Korean romance animated film, and is the first rotoscoped film from that country. This film's visual style was influenced from Richard Linklater's two films, "Waking Life" (2001) and "A Scanner Darkly" (2006).
Document 14: G&amp;G Entertainment: G&G Entertainment (Korean: (주)지앤지엔터테인먼트 )is a South Korean/Japanese animation studio which creates animation for the domestic South Korean and Japanese anime markets. The main studio, which is credited as G&G Entertainment, is located in South Korea, while the Japanese subsidiary studio, which is credited as G&G Direction, assists the main studio and aids in getting outsource work from other Japanese studios. G&G Entertainment is known for its collaboration with the Japanese animation studio Gonzo, with which they have produced their most successful series to date, Kaleido Star. Increasingly, the studio is also seeking collaborations with Chinese studios, particularly for the creation of computer animation productions.
Document 15: Animation International: Animation International Ltd. is a company headquartered in Hong Kong. The company was established in 1979 and focuses on film distribution, publishing and licensing. They export and license animation in China, Hong Kong, the Middle East, Southeast Asia and Taiwan. In 1996 they established Animation International (Thailand) Co., Ltd. as a joint venture with JSL Co., Ltd. The company announced plans to establish places for products related to the Doraemon franchise in electronics stores and in some Laox stores as well as a dedicated store which is supposed to open in 2013.
ground_truth: Korean animation