Maintainer: ‘John Chambers <jmc@r-project.org>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: c(person(given = c("John", "M."),
                      family = "Chambers",
                      role = "aut"),
               person(given = "John",
                      family = "Chambers",
                      role = "cre",
                      email = "jmc@r-project.org"))
as necessary.
Found the following (possibly) invalid URL:
  URL: ../doc/Chapter_XR.pdf
    From: man/noscalar.Rd
Maintainer: ‘John Chambers <jmc@r-project.org>’

No Authors@R field in DESCRIPTION.
Please add one, modifying
  Authors@R: c(person(given = c("John", "M."),
                      family = "Chambers",
                      role = "aut"),
               person(given = "John",
                      family = "Chambers",
                      role = "cre",
                      email = "jmc@r-project.org"))
as necessary.
Found the following (possibly) invalid URL:
  URL: ../doc/Chapter_XR.pdf
    From: man/noscalar.Rd