import { attribute } from "https://deno.land/x/graphviz@v0.2.1/attribute.ts";
const { levelsgap } = attribute;
Specifies strictness of level constraints in neato when mode="ipsep" or "hier". Larger positive values mean stricter constraints, which demand more separation between levels. On the other hand, negative values will relax the constraints by allowing some overlap between the levels.