   ## Protocols
 
   Besides implementing the functions in this module, all
-  dictionaries are also required to implement the `Access`
+  dictionaries are required to implement the `Access`
   protocol:
 
       iex> dict = HashDict.new

  end

  @doc """
  Returns the `{ :ok, value }` associated with `key` in `dict`.
  If `dict` does not contain `key`, returns `:error`.

  ## Examples


  @doc """
  Returns a new dict where only the keys in `keys` from `dict` are
  included. 
  Any non-member keys are ignored.

  ## Examples

