Be explicit about how many items are necessary to create a local network of references

[scannopolis]

That's it. That's the issue.

[diegodlh]

Thanks, @scannopolis. This has been suggested by another user as well.

Right now the option is disabled on the Cita submenu if only one item has been selected. A possible solution would be to have the option enabled no matter how many items have been selected, and (when the user clicks on it) either display a warning that at least two items must be selected to show the network, or show the network anyway for just one "input item" (~node).