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Module type Graphviz.ATTRIBUTES

module type ATTRIBUTES = sig .. end
The ATTRIBUTES module type defines the interface for the engines.
type graph
Attributes of graphs.
type vertex
Attributes of vertices.
type edge
Attributes of edges.
type subgraph = {
   sg_name : string; (*
Box name.
*)
   sg_attributes : vertex list; (*
Box attributes.
*)
   sg_parent : string option; (*
Nested subgraphs.
*)
}
Attributes of (optional) boxes around vertices.