def duplicateActiveLayer(self):
		"""
		Duplicates the current active :py:class:`Layer`.
		
		:rtype: Nothing.
		"""
		activeLayer = self.layers[self.activeLayer]
		newLayer = Layer(data=activeLayer.data, effect=activeLayer.effect)
		self.layers.append(newLayer)
		self.activeLayer = len(self.layers)-1