Edge Markers
Arrowheads are configured per edge: open or closed, in any colour and at any size. Edges asking for the same arrowhead share a single SVG definition, so a large graph declares one marker per style rather than one per edge.
Arrowheads are configured per edge: open or closed, in any colour and at any size. Edges asking for the same arrowhead share a single SVG definition, so a large graph declares one marker per style rather than one per edge.