arg_between             Check Values in Range
arg_character           Check Character Argument
arg_data                Check Common Argument Types
arg_dots_supplied       Check Supplied Dots Argument
arg_element             Check Element
arg_equal               Check Equal Arguments
arg_formula             Check Formula Argument
arg_function            Check Function Argument
arg_index               Check Index Argument
arg_is                  Check Argument Class
arg_length              Check Argument Length
arg_logical             Check Logical Argument
arg_named               Check Named Argument
arg_no_NA               Check NA in Argument
arg_non_null            Check NULL Argument
arg_numeric             Check Numeric Argument
arg_or                  Check That Arguments Meet Some or All Criteria
arg_supplied            Check Supplied Argument
arg_symmetric           Check Symmetric Matrix Argument
arg_unique              Check Unique Argument
err                     Throw an Error, Warning, or Message
match_arg               Argument Verification
when_supplied           Check Arguments When Supplied
