## Undirected
g <- graph.ring(10)
V(g)$name <- letters[1:10]
GNEL <- igraph.to.graphNEL(g)
g2 <- igraph.from.graphNEL(GNEL)
g2
## Directed
g3 <- graph.star(10, mode="in")
V(g3)$name <- letters[1:10]
GNEL2 <- igraph.to.graphNEL(g3)
g4 <- igraph.from.graphNEL(GNEL2)
g4
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