import { attribute } from "https://deno.land/x/graphviz@v0.2.1/mod.ts";
const { edgetarget } = attribute;
If the edge has a URL or edgeURL attribute, this attribute determines which window of the browser is used for the URL attached to the non-label part of the edge. Setting it to "_graphviz" will open a new window if it doesn't already exist, or reuse it if it does. If undefined, the value of the target is used.