...

common {
    config {
        name=common
    }
	#properties
}

custom.conf

The file custom.conf contains user defined service definitions.These definitions consist of a set of attributes that are required to run the services on one or more Service Contexts. Attributes that you set in custom.conf overrides attributes in standard.conf.

<service> {
 config {
  #properties...
 }
 start-after=[service1,...,service n]
 template="1/standard/basic"
}

standard.conf

The file standard.conf contains predefined service definitions that are required by the system. You can override the properties in this file by updating custom.conf.

...