Because of some ambiguous resources that can do multiple tasks, several tools sit on the boundary between Steps ii and iii (and one between Steps i and ii).
Fighting also flared on the boundary between Kosovo and Serbia, with the Serbian government reporting that one policeman was killed and three were missing.
"A Real Young Girl" perches dizzily and drowsily on the boundary between reality and fantasy.
Meanwhile, there is still trouble in Abyei, on the boundary between north and south.
Many villages are built on the boundary between the uplands and the riverine flats.
"Some people built tombs to steal archaeology, definitely," said 28-year-old Walid Ibrahim, picnicking on the boundary between the old and new cemeteries.
Italy sits on the boundary between the African and Eurasian tectonic plates, with the African plate diving down beneath the Eurasian plate, just to the east of Italy.
Russia's foreign ministry said in a strongly worded statement that the strikes were "on the boundary between criminal negligence and direct connivance with Islamic State terrorists".
Last year our reviewer, Adrienne Edgar, called this "a fascinating, often moving, account of her life on the boundary between two very different cultures".
Kit Hill overlooks this building set on the boundary between Callington and St Dominick parishes and now managed by the Cornwall Heritage Trust.
