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+Spectrum2 manager is tool for managing Spectrum 2 instances. It can manage local instances and also do some basic management of remote instances.
+
+h2. Configuration
+
+Spectrum 2 manager normally checks all configuration files (*.cfg files) in /etc/spectrum2/transports and do some for Spectrum 2 instances declared there.
+This directory can be changed by changing Spectrum 2 manager configuration file, which is stored in /etc/spectrum2/spectrum_manager.cfg by default.
+
+h3. spectrum_manager.cfg - [service] section:
+
+|_. Key |_. Type |_. Default |_. Description |
+| config_directory | string | /etc/spectrum2/spectrum_manager.cfg | Directory where Spectrum2 configuration files are stored. |
+
+h2. Managing all local instances
+
+h3. spectrum2_manager start
+
+Starts all Spectrum2 instances according to config files defined in config_directory. This command can be called repeatedly. It has no effect on already running instances.
+
+h3. spectrum2_manager stop
+
+Stops all Spectrum2 instances according to config files defined in config_directory.
+
+h3. spectrum2_manager status
+
+Checks if all local instances (defined in config files in config_directory) are running. Returns 0 if all instances are running. If some instances are not running, returns 3.
+
+h2. Managing particular Spectrum 2 instance
+
+Spectrum 2 manager can be also used to manage one particular Spectrum 2 instance. For example following command starts Spectrum 2 instance with JID "icq.domain.tld":
+
+<pre>
+spectrum2_manager icq.domain.tld start
+</pre>
+
+Following command stops that instance:
+
+<pre>
+spectrum2_manager icq.domain.tld stop
+</pre>
+
+h2. Querying Spectrum 2 instance
+
+You can get various information from running Spectrum 2 instance. To check all information you can get from Spectrum 2 instance with JID "icq.domain.tld, just run:
+
+<pre>
+spectrum2_manager icq.domain.tld help
+</pre>
+
+You will get something similar to this list of available commands:
+
+<pre>
+General:
+    status - shows instance status
+    reload - Reloads config file
+    uptime - returns ptime in seconds
+Users:
+    online_users - returns list of all online users
+    online_users_count - number of online users
+    online_users_per_backend - shows online users per backends
+    has_online_user <bare_JID> - returns 1 if user is online
+    register <bare_JID> <legacyName> <password> - registers the new user
+    unregister <bare_JID> - unregisters existing user
+Messages:
+    messages_from_xmpp - get number of messages received from XMPP users
+    messages_to_xmpp - get number of messages sent to XMPP users
+Backends:
+    backends_count - number of active backends
+    crashed_backends - returns IDs of crashed backends
+    crashed_backends_count - returns number of crashed backends
+Memory:
+    res_memory - Total RESident memory spectrum2 and its backends use in KB
+    shr_memory - Total SHaRed memory spectrum2 backends share together in KB
+    used_memory - (res_memory - shr_memory)
+    average_memory_per_user - (memory_used_without_any_user - res_memory)
+    res_memory_per_backend - RESident memory used by backends in KB
+    shr_memory_per_backend - SHaRed memory used by backends in KB
+    used_memory_per_backend - (res_memory - shr_memory) per backend
+    average_memory_per_user_per_backend - (memory_used_without_any_user - res_memory) per backend
+</pre>
+
+