=========
Nodeset 1
=========

nodeset vset1
nodeset vset2, vset3

---

(source_file
    (nodeset name: (identifier))
    (nodeset
        name: (identifier)
        name: (identifier)
    )
)

=========
Edgeset 1
=========

edgeset seed_edges

---

(source_file
    (edgeset (identifier))
)

