Empty Oval Tool. Allows you to draw an oval. Hold down the shift key to draw a circle, and hold down the command key to fill the rectangle. Filled Oval Tool. Allows you to draw an oval. Hold down the shift key to draw a circle, and hold down the command key to remove the filling. Empty Round Rect Tool. Allows you to draw a round rectangle. Hold down the shift key to draw a square, and hold down the command key to fill the rectangle. Filled Round Rect Tool. Allows you to draw a round rectangle. Hold down the shift key to draw a square, and hold down the command key to remove the filling. Empty Rect Tool. Allows you to draw a rectangle. Hold down the shift key to draw a square, and hold down the command key to fill the rectangle. Filled Rect Tool. Allows you to draw a rectangle. Hold down the shift key to draw a square, and hold down the command key to remove the filling. Line Tool. For drawing a line in an editor. Hold down the shift key to draw a horizontal, vertical or dialogal line.