   end
 
   @doc """
-  Gets the IEx width for printing.
+  Returns the IEx width for printing.
 
   Used by helpers and it has a default maximum cap of 80 chars.
   """
+  @spec width() :: pos_integer()
   def width do
     IEx.Config.width()
   end
 
   @doc """
-  Gets the options used for inspecting.
-  """
+  Returns the options used for inspecting.
+  """
+  @spec inspect_opts() :: keyword()
   def inspect_opts do
     IEx.Config.inspect_opts()
   end


  ANSI escapes in `string` are not processed in any way.
  """
  def color(color, string) do
    case IEx.Config.color(color) do
      nil ->

  @doc """
  Returns IEx configuration.
  """
  @spec configuration() :: keyword()
  def configuration do
    IEx.Config.configuration()
  end
