Example of description in XML:

<item addr="100:100" name="Colour scheme" type="light-scheme" system="yes" image="lamp">
   	<contains addr="140:8" state="1"/>
   	<contains addr="140:24" state="1:250:0" />
    <contains addr="140:32" state="1:250:250:250:0"/>
   	<automation door-sensors="146:24" enabled="yes" illumination-level="50" time-interval="60" type="on-by-door"/>
</item>

Parameters of contains :

Name type and variety description
id* number
1..2048
Executive device ID
sub-id* number
1..255
executive device sub-id
state* number Status sent to the executor

* – required fields