(VikLayerFuncProperties) NULL,
(VikLayerFuncDraw) vik_aggregate_layer_draw,
(VikLayerFuncChangeCoordMode) aggregate_layer_change_coord_mode,
(VikLayerFuncProperties) NULL,
(VikLayerFuncDraw) vik_aggregate_layer_draw,
(VikLayerFuncChangeCoordMode) aggregate_layer_change_coord_mode,
(VikLayerFuncAddMenuItems) NULL,
(VikLayerFuncSublayerAddMenuItems) NULL,
(VikLayerFuncAddMenuItems) NULL,
(VikLayerFuncSublayerAddMenuItems) NULL,