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.
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.
Note
Symbols and links cannot change layers.