True! It is indeed confusing. In this commit I was just reordering blocks in order to improve the locical order of the sections. So thats exactly what been already in the [documentation](http://docs.couchdb.org/en/latest/cluster/setup.html#the-cluster-setup-api). I am a CouchDB Newbie, so I think it tries to express that this setting is defining the nodes name. `must be seperate for each node` might be a duplicate of the next sentence, which is talking about the uniquness.
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