| window | Specify the window (object of class Window) that will hold this layer. The window cannot be changed once it has been determined. |
| parent | Specifies the parent layer of this layer. If you specify null, it will be the primary layer. There can be only one primary layer in a window, and if a layer is used, there must always be one, and it is the parent layer of all layers. However, depending on the drawing device (configurable with Window.drawDevice), the window can have multiple primary layers. The parent of the layer can be changed with the Layer.parent property. |