c(
    person("Yihui", "Xie", role = c("aut", "cre"), email = "xie@yihui.name", comment = c(ORCID = "0000-0003-0645-5666")),
    person("Abhraneel", "Sarma", role = "ctb"),
    person("Adam", "Vogt", role = "ctb"),
    person("Alastair", "Andrew", role = "ctb"),
    person("Alex", "Zvoleff", role = "ctb"),
    person("Andre", "Simon", role = "ctb", comment = "the CSS files under inst/themes/ were derived from the Highlight package http://www.andre-simon.de"),
    person("Aron", "Atkins", role = "ctb"),
    person("Aaron", "Wolen", role = "ctb"),
    person("Ashley", "Manton", role = "ctb"),
    person("Atsushi", "Yasumoto", role = "ctb", comment = c(ORCID = "0000-0002-8335-495X")),
    person("Ben", "Baumer", role = "ctb"),
    person("Brian", "Diggs", role = "ctb"),
    person("Brian", "Zhang", role = "ctb"),
    person("Bulat", "Yapparov", role = "ctb"),
    person("Cassio", "Pereira", role = "ctb"),
    person("Christophe", "Dervieux", role = "ctb"),
    person("David", "Hall", role = "ctb"),
    person("David", "Hugh-Jones", role = "ctb"),
    person("David", "Robinson", role = "ctb"),
    person("Doug", "Hemken", role = "ctb"),
    person("Duncan", "Murdoch", role = "ctb"),
    person("Elio", "Campitelli", role = "ctb"),
    person("Ellis", "Hughes", role = "ctb"),
    person("Emily", "Riederer", role = "ctb"),
    person("Fabian", "Hirschmann", role = "ctb"),
    person("Fitch", "Simeon", role = "ctb"),
    person("Forest", "Fang", role = "ctb"),
    person(c("Frank", "E", "Harrell", "Jr"), role = "ctb", comment = "the Sweavel package at inst/misc/Sweavel.sty"),
    person("Garrick", "Aden-Buie", role = "ctb"),
    person("Gregoire", "Detrez", role = "ctb"),
    person("Hadley", "Wickham", role = "ctb"),
    person("Hao", "Zhu", role = "ctb"),
    person("Heewon", "Jeon", role = "ctb"),
    person("Henrik", "Bengtsson", role = "ctb"),
    person("Hiroaki", "Yutani", role = "ctb"),
    person("Ian", "Lyttle", role = "ctb"),
    person("Hodges", "Daniel", role = "ctb"),
    person("Jake", "Burkhead", role = "ctb"),
    person("James", "Manton", role = "ctb"),
    person("Jared", "Lander", role = "ctb"),
    person("Jason", "Punyon", role = "ctb"),
    person("Javier", "Luraschi", role = "ctb"),
    person("Jeff", "Arnold", role = "ctb"),
    person("Jenny", "Bryan", role = "ctb"),
    person("Jeremy", "Ashkenas", role = c("ctb", "cph"), comment = "the CSS file at inst/misc/docco-classic.css"),
    person("Jeremy", "Stephens", role = "ctb"),
    person("Jim", "Hester", role = "ctb"),
    person("Joe", "Cheng", role = "ctb"),
    person("Johannes", "Ranke", role = "ctb"),
    person("John", "Honaker", role = "ctb"),
    person("John", "Muschelli", role = "ctb"),
    person("Jonathan", "Keane", role = "ctb"),
    person("JJ", "Allaire", role = "ctb"),
    person("Johan", "Toloe", role = "ctb"),
    person("Jonathan", "Sidi", role = "ctb"),
    person("Joseph", "Larmarange", role = "ctb"),
    person("Julien", "Barnier", role = "ctb"),
    person("Kaiyin", "Zhong", role = "ctb"),
    person("Kamil", "Slowikowski", role = "ctb"),
    person("Karl", "Forner", role = "ctb"),
    person(c("Kevin", "K."), "Smith", role = "ctb"),
    person("Kirill", "Mueller", role = "ctb"),
    person("Kohske", "Takahashi", role = "ctb"),
    person("Lorenz", "Walthert", role = "ctb"),
    person("Lucas", "Gallindo", role = "ctb"),
    person("Marius", "Hofert", role = "ctb"),
    person("Martin", "Modrák", role = "ctb"),
    person("Michael", "Chirico", role = "ctb"),
    person("Michael", "Friendly", role = "ctb"),
    person("Michal", "Bojanowski", role = "ctb"),
    person("Michel", "Kuhlmann", role = "ctb"),
    person("Miller", "Patrick", role = "ctb"),
    person("Nacho", "Caballero", role = "ctb"),
    person("Nick", "Salkowski", role = "ctb"),
    person("Niels Richard", "Hansen", role = "ctb"),
    person("Noam", "Ross", role = "ctb"),
    person("Obada", "Mahdi", role = "ctb"),
    person("Pavel N.", "Krivitsky", role = "ctb", comment=c(ORCID = "0000-0002-9101-3362")),
    person("Qiang", "Li", role = "ctb"),
    person("Ramnath", "Vaidyanathan", role = "ctb"),
    person("Richard", "Cotton", role = "ctb"),
    person("Robert", "Krzyzanowski", role = "ctb"),
    person("Romain", "Francois", role = "ctb"),
    person("Ruaridh", "Williamson", role = "ctb"),
    person("Scott", "Kostyshak", role = "ctb"),
    person("Sebastian", "Meyer", role = "ctb"),
    person("Sietse", "Brouwer", role = "ctb"),
    person(c("Simon", "de"), "Bernard", role = "ctb"),
    person("Sylvain", "Rousseau", role = "ctb"),
    person("Taiyun", "Wei", role = "ctb"),
    person("Thibaut", "Assus", role = "ctb"),
    person("Thibaut", "Lamadon", role = "ctb"),
    person("Thomas", "Leeper", role = "ctb"),
    person("Tim", "Mastny", role = "ctb"),
    person("Tom", "Torsney-Weir", role = "ctb"),
    person("Trevor", "Davis", role = "ctb"),
    person("Viktoras", "Veitas", role = "ctb"),
    person("Weicheng", "Zhu", role = "ctb"),
    person("Wush", "Wu", role = "ctb"),
    person("Zachary", "Foster", role = "ctb"),
    person("Zhian N.", "Kamvar", role = "ctb", comment = c(ORCID = "0000-0003-1458-7108"))
    )