'Create an X11 tunnel to the given node,
optionally starting a client.
Usage: x node [cmd args]'

def do_x(self, line):

    args = line.split()
    if (not args):
        error('usage:    x    node    [cmd    args]...\n')
    else:
        node = self.mn[args[0]]
        cmd = args[1:]
        self.mn.terms += runX11(node, cmd)
