headtarget
Browser window to use for the
headURL link
type: escString, default: <none>
If the edge has a headURL,
headtarget determines which window of the
browser is used
for the URL. Setting headURL=_graphviz will open a new window if the window
doesn't already exist, or reuse the window if it does.
If undefined, the value of the target is used.
- Edges
Note: map, svg only.