Added Objects example

TODO.md

@@ -13,6 +13,9 @@
 
   [1]: examples/dependency.md
 
+*   elaborate Objects example[2]
+
+  [2]: examples/objects.md
 
 ### Data model ###
 

examples/objects.md

@@ -0,0 +1,46 @@
+Name: Objects.md
+Description: Demo on how to handle objects to operate on.
+
+Demo: Objects
+=============
+
+
+Description
+-----------
+
+Sometimes, to achieve desired result, you need to perform scenario on different
+objects. Typically this is case in server-client scenario: you set up a server,
+connect client, do something with client, do something with server, connect
+another client observe server, you get the pint.
+
+In order to filter out repeating all the clients and servers, and allow for a
+more intuitive representation (e.g. an icon), we need to introduce a special
+markup for objects.
+
+
+Rules
+-----
+
+*   there can  be any number of objects
+
+*   there is no formal hierarchy, proper naming can be introduced if needed
+
+*   if the line body starts with `qr/(\w+):/`, `$1` is the object name
+
+*   TODO: define how to introduce style
+
+
+Example
+-------
+
+1.  server: prepare a server
+
+2.  client: connect to server
+
+3.  client: download rules
+
+4.  server: add new rules
+
+5.  client: update rules
+
+