how to configure xymon server receiving summary info from another xymon server?

list Richard Hamilton
Thu, 9 Oct 2014 17:27:35 -0400
Message-Id: <user-4230bcc91eed@xymon.invalid>

Let's say server a has in its hosts.cfg

summary a.All  12.34.56.78 https://a.foo.com/xymon/


How will server b (12.34.56.78) have to be set up to display that overall
status?  Am I correct in thinking that would that appear as a line with one
dot if that's the only summary from "a" being sent to it?