Stacking on a layer works the same way it does on a “plain” page. Within a layer, each item has its own position in the stacking order (the front-to-back positioning of the items on the layer). When you draw items on a layer, new items are stacked in front of existing items on that layer. You can use the Send to Back, Send Backward, Bring to Front, and Bring Forward commands (Item menu) to change the stacking order of items within a layer, but these commands do not move items to different layers. However, everything on a front layer displays in front of everything on a rear layer.

To change the stacking order of layers, you can drag a layer to a new position in the Layers palette. (The layer at the top of the Layers palette is the frontmost layer of the layout.)