Assigns every node in the input network an index number,
            such that nodes in the same layer will be labeled with 
            consecutive indices in left to right order.
            Uses a depth first "outward" (i.e., following links from "from-node" to "to-node")
            traversal of the network, assigning indices to nodes as they are discovered.
            
            
            
            Syntax
            
            
            
            
            protected virtual void DepthFirstOutInitializeIndices()
             
        
             
        
            
            
             
            
            
            
            
            
            
            
            
            
            
            
            See Also