Browsing French translation

201.

A list of screen variants that are searched when choosing a screen to display to the user. This should always end with None, to ensure that the default screens are chosen. See :ref:`screen-variants`.

202.

A string that is formatted with the string argument to the voice statement to produce the filename that is played to the user. For example, if this is "{filename}.ogg", the ``voice "test"`` statement will play test.ogg.

203.

If not None, this should be a function that is called when a :ref:`with statement <with-statement>` occurs. This function can be responsible for putting up transient things on the screen during the transition. The function is called with a single argument, which is the transition that is occurring. It is expected to return a transition, which may or may not be the transition supplied as its argument.