'Spawn xterm(s) for the given node(s).
Usage: xterm node1 node2 ...'

def do_xterm(self, line, term='xterm'):

    args = line.split()
    if (not args):
        error(('usage:    %s    node1    node2    ...\n' % term))
    else:
        for arg in args:
            if (arg not in self.mn):
                error(("node    '%s'    not    in    network\n" % arg))
            else:
                node = self.mn[arg]
                self.mn.terms += makeTerms([node], term=term)
