Understanding layers

A dashboard diagram allocates 11 layers for symbols and background objects. Symbols are stored in layer 10 (the node layer) and links are stored in layer 9. Layers 0 - 8 are available for background objects. The following figure shows the logical structure for layers in a dashboard diagram.
diadash_layers13.png
The layer structure in a dashboard diagram
The following figure shows that objects on a higher layer overlay the objects below it. Links are displayed above background objects and symbols are contained in the topmost layer.
diadash_layerdisplay14.png
Symbols, links, and background objects on different layers
Note
Symbols and links cannot change layers.