anchor.diff:  processx
   programmatically
   prs
  +psychometrics
   pthread
   pubkey
   purrr
   px
  +quantal
  +quantile
   Rademacher
   rchk
   rcpp
  
positive.code: codecov
  coercible
  config
  cpp
  cran
  csl
  
negative.code: signalling
  sitrep
  sk
  skedastic
  Skellam
  skewness
  sl
  soliton
  sr
  