``NLST`` retrieves a list of file names.
The *callback* function is called for each line with a string argument
containing the line with the trailing CRLF stripped. The default *callback*
- prints the line to ``sys.stdout``.
+ prints the line to :data:`sys.stdout`.
.. method:: FTP.set_pasv(val)
current server directory). Multiple arguments can be used to pass non-standard
options to the ``LIST`` command. If the last argument is a function, it is used
as a *callback* function as for :meth:`retrlines`; the default prints to
- ``sys.stdout``. This method returns ``None``.
+ :data:`sys.stdout`. This method returns ``None``.
.. note:: If your server supports the command, :meth:`mlsd` offers a better API.