
  [;1m-spec nodes(Arg) -> Nodes[0m
  [;1m               when[0m
  [;1m                   Arg :: NodeType | [NodeType],[0m
  [;1m                   NodeType ::[0m
  [;1m                       visible | hidden | connected | this | known,[0m
  [;1m                   Nodes :: [node()].[0m

  Returns a list of nodes according to the argument specified. The
  returned result, when the argument is a list, is the list of nodes
  satisfying the disjunction(s) of the list elements.

  [;;4mNodeType[0ms:

  [;;4m[;;4mvisible[0m[0m:
    Nodes connected to this node through normal connections.

  [;;4m[;;4mhidden[0m[0m:
    Nodes connected to this node through hidden connections.

  [;;4m[;;4mconnected[0m[0m:
    All nodes connected to this node.

  [;;4m[;;4mthis[0m[0m:
    This node.

  [;;4m[;;4mknown[0m[0m:
    Nodes that are known to this node. That is, connected nodes
    and nodes referred to by process identifiers, port
    identifiers, and references located on this node. The set of
    known nodes is garbage collected. Notice that this garbage
    collection can be delayed. For more information, see [;;4m[0m
    [;;4merlang:system_info(delayed_node_table_gc)[0m.

  Some equalities: [;;4m[node()] = nodes(this)[0m, [;;4mnodes(connected) =[0m
  [;;4mnodes([visible, hidden])[0m, and [;;4mnodes() = nodes(visible)[0m.
