A loopback edge targets the port named loop_back
The rule
Normative: this is the rule
- An edge is a loopback edge when, and only when, its target handle ends with
-input-loop_back. - The reserved port name is
loop_back: a handle ending with-input-loopbackis an ordinary edge.
Rule identifiers are permanent and are never renumbered. Each implementation publishes its own standing against these rules; this specification does not.spec 1.0-draft · EDGE-4 · changed in spec 1.0