Rscript                 Run the commands 'Rscript' and 'R CMD'
attr                    Obtain an attribute of an object without
                        partial matching
download_file           Try various methods to download a file
embed_file              Embed a file, multiple files, or directory on
                        an HTML page
file_ext                Manipulate filename extensions
file_string             Read a text file and concatenate the lines by
                        "\n"
gsub_file               Search and replace strings in files
in_dir                  Evaluate an expression under a specified
                        working directory
install_dir             Install a source package from a directory
isFALSE                 Test if an object is identical to 'FALSE'
is_ascii                Check if a character vector consists of
                        entirely ASCII characters
is_windows              Test for types of operating systems
native_encode           Try to use the system native encoding to
                        represent a character vector
normalize_path          Normalize paths
numbers_to_words        Convert numbers to English words
optipng                 Run OptiPNG on all PNG files under a directory
parse_only              Parse R code and do not keep the source
pkg_attach              Attach or load packages, and automatically
                        install missing packages if requested
prose_index             Find the indices of lines in Markdown that are
                        prose (not code blocks)
protect_math            Protect math expressions in pairs of backticks
                        in Markdown
raw_string              Print a character vector in its raw form
read_utf8               Read / write files encoded in UTF-8
rev_check               Run 'R CMD check' on the reverse dependencies
                        of a package
rstudio_type            Type a character vector into the RStudio source
                        editor
same_path               Test if two paths are the same after they are
                        normalized
session_info            An alternative to sessionInfo() to print
                        session information
strict_list             Strict lists
tojson                  A simple JSON serializer
try_silent              Try to evaluate an expression silently
