Ordering package:graphviz
Valid for: GN;
Default: none;
Notes:
Dot
only
Specify an ordering of edges of a node: either the outgoing or the
incoming edges of a node must appear left-to-right in the same order
in which they are defined in the input.
When specified as both a global graph or sub-graph level attribute,
then it takes precedence over an attribute specified for an individual
node.