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+# Management
+
+## Sets and supersets
+
+The Hydra Suite is flexible enough so you can use it to:
+
+* Manage a single machine using `hydractl` command.
+* Manage a set or a subset of machines -- a *network* -- from the same
+  organization using `hydra` command.
+* Manage a superset of machines -- *a constelation* -- comprised of one or more
+  organizations using `hydras` command.
+
+## Creating a new network
+
+Use the following commands to create the needed repositories when starting a
+new network:
+
+    hydra example init   ~/file/example
+    hydra example config domain example.org
+
+This makes `~/files/example` the base folder for all configuration of the
+network of machines called `example`.
+
+## Managing an existing network
+
+If you have enough credentials (ssh pubkey set in the server), you can fetch
+all the needed repositories and configurations to a local folder
+`~/file/example` using simply the following command:
+
+    hydra example init ~/file/example git@admin.example.org:
+
+This will try to fetch a superproject from git@admin.example.org:example.git
+-- if exists, plus submodules -- or each git repository used by a network
+previously created by the `init` action (`config.git`, `puppet.git`, etc).