   @doc """
   Converts a string to an existing atom.
 
-  Currently Elixir does not support conversions from strings
-  which contains Unicode codepoints greater than 0xFF.
+  Currently Elixir does not support the conversion of strings
+  that contain Unicode codepoints greater than 0xFF.
 
   Inlined by the compiler.
 

  end

  @doc """
  Returns a string where leading/trailing `char` have been
  removed.

  ## Examples

  defp do_at(nil, _, _), do: nil

  @doc """
  Returns a substring starting at the offset `start`, and of
  length `len`.

  If the offset is greater than string length, then it returns `""`.

  Remember this function works with Unicode codepoints and considers
  the slices to represent codepoint offsets. If you want to split
  on raw bytes, check `Kernel.binary_part/3` instead.

  ## Examples
