def __init__(self, workspace):
Layout.__init__(self, workspace)
self.maxmasters = 1
self.root = TileRoot()
self.root.add_child(TileVerticalBox(self.root))
self.master = TileHorizontalBox(self.root.child)
self.slave = TileHorizontalBox(self.root.child)
self.proportions = (0.5, 0.5)
