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.