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