-declaring *rrqnet* daemon will establish and maintain by means of
-regular heartbeat messaging. An address block declaration defines the
-mask for allowed incoming connections, aka _downlinks_, that teh
-declaring dameon expects are maintained as uplinks by the remote
-*rrqnet* daemons.
+*rrqnet* daemon will establish and maintain by means of regular
+"heartbeat" messaging. Other declarations define the mask for allowed
+incoming connections, aka _downlinks_, that the dameon expects the
+remote end to maintain as uplinks by the remote *rrqnet* daemons.
+
+Two (or more) +rrqnet+ plugs may be set up with uplink connections to
+each other in which case both (all) of them maintain the link.
+
+.example of multiple pair-wise uplinks
+====
+----
+[1.0.0.1]# rrqnet -t vpn0 2300 2.0.0.1:2300 3.0.0.1:2300 4.0.0.1:2300
+[2.0.0.1]# rrqnet -t vpn0 2300 1.0.0.1:2300 3.0.0.1:2300 4.0.0.1:2300
+[3.0.0.1]# rrqnet -t vpn0 2300 2.0.0.1:2300 1.0.0.1:2300 4.0.0.1:2300
+[4.0.0.1]# rrqnet -t vpn0 2300 2.0.0.1:2300 3.0.0.1:2300 1.0.0.1:2300
+----
+====