content: title = "configr help urls configuration file"
  [urls]
  json_wiki = "https://en.wikipedia.org/wiki/JSON"
  yaml_wiki = "https://en.wikipedia.org/wiki/YAML"
  ini_wiki = "https://en.wikipedia.org/wiki/INI_file"
  toml_wiki = "https://en.wikipedia.org/wiki/TOML"
  json_org = "http://json.org/"
  yaml_org = "http://yaml.org/"
  toml_official_github = "https://github.com/toml-lang/toml"
  toml_pypi = "https://pypi.org/project/toml/"
  toml_cran = "https://CRAN.R-project.org/package=RcppTOML"
  json_stackoverflow_search = "https://stackoverflow.com/search?q=json"
  yaml_stackoverflow_search = "https://stackoverflow.com/search?q=yaml"
  ini_stackoverflow_search = "https://stackoverflow.com/search?q=ini"
  toml_stackoverflow_search = "https://stackoverflow.com/search?q=toml"
  json_github_search = "https://github.com/search?q=json"
  ini_github_search = "https://github.com/search?q=ini"
  yaml_github_search = "https://github.com/search?q=yaml"
  toml_github_search = "https://github.com/search?q=toml"
  ini_js_github = "https://github.com/npm/ini"
  ini_go_github = "https://github.com/go-ini/ini"
  yaml_go_github = "https://github.com/go-yaml/yaml"
  yaml_js_github = "https://github.com/nodeca/js-yaml"
  yaml_python_github = "https://github.com/adrienverge/yamllint"
  yaml_r_github = "https://github.com/viking/r-yaml/"
  json_r_github = "https://github.com/jeroen/jsonlite/"
  json_js_github = "https://github.com/trentm/json"
  json_cplus_github = "https://github.com/nlohmann/json"
  json_go_github = "https://github.com/tomnomnom/gron"
  json_python_github = "https://github.com/Julian/jsonschema"
  toml_r_github = "https://github.com/eddelbuettel/rcpptoml"
  toml_go_github = "https://github.com/BurntSushi/toml"
  toml_python_github = "https://github.com/uiri/toml"
  toml_js_github = "https://github.com/BinaryMuse/toml-node"
  