Stacking allows you to place one object on top of another so that it forms a more complex, multi-dimensional figure.
It is an effective method for taking simple, existing objects and forming more intuitive ones. For example, by stacking two ovals and two rectangles, you can create a picture that resembles a pump, as depicted in the following figure.
To form more precise connections, such as the two rectangles meeting flush with the edge of the outside circle in the figure above, try nudging the object exactly where you want it. For more information on moving objects and nudging, refer to the Moving Objects section.
You can stack as many objects as you want. The object on top does not have to cover the other object completely and does not alter its properties.
