   end
 
   @doc """
-  When used inside quoting, marks that the variable should
-  not be hygienized. The argument can be either a variable
-  unquoted or in standard tuple form `{name, meta, context}`.
+  When used inside quoting, marks that the given variable should
+  not be hygienized.
+
+  The argument can be either a variable unquoted or in standard tuple form
+  `{name, meta, context}`.
 
   Check `Kernel.SpecialForms.quote/2` for more information.
   """

  end

  @doc """
  Returns true if the `module` is loaded and contains a
  public `macro` with the given `arity`, otherwise false.

  Notice that this function does not load the module in case
  it is not loaded. Check `Code.ensure_loaded/1` for more
  information.
  """
  @spec macro_exported?(atom, atom, integer) :: boolean
  def macro_exported?(module, macro, arity) do

  end

  @doc """
  Checks if the element on the left-hand side is a member of the
  collection on the right-hand side.

  ## Examples

