diff --git a/addons/summer_day/data/blueprint/blueprint.gd b/addons/summer_day/data/blueprint/blueprint.gd
index a713cac..e69fd1f 100644
--- a/addons/summer_day/data/blueprint/blueprint.gd
+++ b/addons/summer_day/data/blueprint/blueprint.gd
@@ -25,3 +25,7 @@ func get_model() -> PackedScene:
 	if model == null:
 		model = _create_model()
 	return model
+
+
+func get_allocation_size() -> int:
+	return 0
diff --git a/addons/summer_day/data/document/table.gd b/addons/summer_day/data/document/table.gd
index a614c65..7546513 100644
--- a/addons/summer_day/data/document/table.gd
+++ b/addons/summer_day/data/document/table.gd
@@ -15,9 +15,7 @@ func create():
 	image.create(row_size, 1, false, Image.FORMAT_RGBAF)
 	texture.create_from_image(image, 0)
 	_presage_changes()
-	for i in range(row_size):
-		image.set_pixel(i, 0,
-		Color(1.0, 0.0, 0.0))
+	image.fill(Color.red)
 	flush()
 
 
@@ -32,6 +30,23 @@ func apply_matrix(matrix: SummerDayMatrix4, row: int, position: int):
 		)
 
 
+func add_row():
+	_presage_changes()
+	image.crop(image.get_width(), image.get_height() + 1)
+
+
+func remove_row(at: int):
+	_presage_changes()
+	var size = image.get_size()
+	var below_height = size.y - 1
+	if at < below_height:
+		image.blit_rect(image,
+			Rect2(Vector2(0, at + 1), Vector2(size.x, below_height - at)),
+			Vector2(Vector2(0, at))
+		)
+	image.crop(size.x, below_height)
+
+
 func flush():
 	if dirty_flag:
 		image.unlock()