   end
 
   @doc """
-  Creates a stream that emits a single value after `n` milliseconds. The value emitted is
-  `0`.
+  Creates a stream that emits a single value after `n` milliseconds.
+  
+  The value emitted is `0`.
   
   ## Examples
 

  """
  @spec timer(non_neg_integer) :: Enumerable.t
  def timer(n) do
    Stream.take(interval(n), 1)
  end

  @doc """

  end

  @doc """
  Creates a stream that emits a value every `n` milliseconds.

  The values emitted are an increasing counter starting at `0`.

  ## Examples

