XDot.Makemodule G : sig ... endmodule HV : sig ... endmodule HE : sig ... endtype graph_layout = {vertex_layouts : node_layout HV.t;edge_layouts : edge_layout HE.t;cluster_layouts : (string, cluster_layout) Hashtbl.t;bbox : bounding_box;}val layout_of_xdot : xdot_file:string -> G.t -> graph_layoutval layout_of_dot : ?cmd:string -> dot_file:string -> G.t -> graph_layout