Update docs

site/using-weave/finding-adding-hosts-dynamically.md

@@ -3,58 +3,69 @@ title: Adding and Removing Hosts Dynamically
 menu_order: 90
 ---
 
+To add a host to an existing Weave network, launch Weave Net on the
+host, and supply the address of at least one host. Weave Net
+automatically discovers any other hosts in the network and establishes
+connections with them if it can (in order to avoid unnecessary
+multi-hop routing).
 
-To add a host to an existing Weave network, simply launch 
-Weave Net on the host, and then supply the address of at least 
-one host. Weave Net automatically discovers any other hosts in 
-the network and establishes connections with them if it 
-can (in order to avoid unnecessary multi-hop routing).
+In some situations existing Weave Net hosts may be unreachable from
+the new host due to firewalls, etc.  However, it is still possible to
+add the new host, provided that inverse connections, for example, from
+existing hosts to the new hosts, are available.
 
-In some situations all existing Weave Net hosts may be 
-unreachable from the new host due to firewalls, etc. 
-However, it is still possible to add the new host, 
-provided that inverse connections, for example, 
-from existing hosts to the new hosts, are available. 
-
-To accomplish this, launch Weave Net onto the new host 
-without supplying any additional addresses.  And then, from one 
-of the existing hosts run:
+To accomplish this, launch Weave Net onto the new host without
+supplying any additional addresses and then, from one of the existing
+hosts run:
 
     host# weave connect $NEW_HOST
 
-Other hosts on the Weave network will automatically attempt
-to establish connections to the new host as well. 
+Any other existing hosts on the Weave network will attempt to
+establish connections to the new host as well.
+
+###Instructing Peers to Forget a Host
 
-Alternatively, you can also instruct a peer to forget a 
-particular host specified to it via `weave launch` or 
-`weave connect` by running:
+To instruct a peer to forget a particular host specified to it via
+`weave launch` or `weave connect` run:
 
     host# weave forget $DECOMMISSIONED_HOST
 
-This prevents the peer from trying to reconnect to that host 
-once connectivity to it is lost, and therefore can be used 
-to administratively remove any decommissioned peers 
-from the network.
+This prevents the peer from reconnecting to that host once
+connectivity to it is lost, and can be used to administratively remove
+any decommissioned peers from the network.
 
-Hosts may also be bulk-replaced. All existing hosts 
-will be forgotten, and the new hosts will be added:
+###Bulk Replacing Hosts
+
+Hosts can also be bulk-replaced. All existing hosts will be forgotten,
+and the new hosts added:
 
     host# weave connect --replace $NEW_HOST1 $NEW_HOST2
 
-For complete control over the peer topology, automatic 
-discovery can be disabled using the `--no-discovery` 
-option with `weave launch`. 
+###Restarting Docker and Weave Net
+
+If Weave Net is restarted by Docker it automatically remembers any
+previous connect and forget operations, however if you stop it
+manually and launch it again, it will not remember any prior connects.
+If you want to launch again and retain the results of those operations
+use `--resume`:
+
+    host# weave launch --resume
+
+> **Note:** In this case, you cannot specify a list of addresses,
+> since the previous peer list is used exclusively.
+
+For complete control over the peer topology, disable automatic
+discovery using the `--no-discovery` option with `weave launch`.
 
-If discovery if disabled, Weave Net only connects to the 
-addresses specified at launch time and with `weave connect`.
+If discovery if disabled, Weave Net only connects to the addresses
+specified at launch time and with `weave connect`.
 
-A list of all hosts that a peer has been asked to connect 
-to with `weave launch` and `weave connect` 
-can be obtained using:
+To return a list of all hosts and their peer connections established
+with `weave launch` and `weave connect` run:
 
     host# weave status targets
 
-**See Also** 
+**See Also**
 
  * [Enabling Multi-Cloud, Multi-Hop Networking and Routing](/site/using-weave/multi-cloud-multi-hop.md)
  * [Stopping and Removing Peers](/site/ipam/stop-remove-peers-ipam.md)