A Graph Instance lets one Standard Graph use another as a reusable texture-processing component.
Conceptually: Source Standard Graph → Public Interface → Graph Instance → Parent Standard Graph. Several instances can reference the same live source while keeping their own inputs, parameter overrides, processing context, and seed values. As you can see in the example video below (and if you’re thinking it’s the same video from the Exposing Parameters page, yes, you’re right — we were too lazy to record a new one), we used the custom noise graph twice inside the main graph with different random seeds. We could have used it as many times as we wanted.
Inside a Standard Graph, add Shift+A → Input → Graph Instance and choose the Standard Graph you want to reuse. WonderTexture reads the source graph’s public schema and builds the instance automatically.
Source input Labels become socket names, and source Output roles, names, types, and Order define the result interface.