anchor.diff:  
   === Defining Meta-Configuration Model
   
  -The configuration meta-model is defined by simple configuration entries. The root section for all model configuration
  -by default is called +{model}+. Within this section fully qualified configuration keys defines which part of the
  -configuration is targeted by certain entries.
  +The configuration meta-model is defined by simple configuration meta-data entries. The section for all model
  +configuration by default is called +model+, which results in entries such as +_my.config.key.model.target=Section+.
  +Within this section fully qualified configuration keys defines
  +which part of the configuration is targeted by certain entries.
   
   ==== Defining Sections
   
  
positive.code: Usage tracking is disabled by default. It can be enabled by calling +ConfigUsageStats.enableUsageTracking(true);+.
  +ConfigUsageStats.isUsageTrackingEnabled()+ returns the current tracking status.
  
  The +Usage+ class itself provides access to further fainer grained usage data (+AccessDetail+) cotaining:
  
  * the access point (+fqn.ClassName#method(line: xxx)+).
  * the number of accesses
  
negative.code: [source,listing]
  -------------------------------------------------------------------------------
  # org.mycompany.root.name (required parameter)
  _org.mycompany.root.name.model.target=Parameter
  _org.mycompany.root.name.model.required=true
  _org.mycompany.root.name.model.description=The company's name, also used in the application's main header.
  
  # org.mycompany.security (required parameters)
  _org.mycompany.security.uid.model.required=true
  _org.mycompany.security.uid.model.description=The user id.
  _org.mycompany.security.realm.model.required=true
  _org.mycompany.security.realm.model.validator=org.apache.tamaya.model.RealmValidator
  _org.mycompany.security.realm.model.description=The security realm required.
  _org.mycompany.security.tokenid.model.description=The token id, if the token service is used (optional).
  
  # A minmal parameter
  _minimalClass.model.target=Class
  -------------------------------------------------------------------------------
  
  Similarly as when defining section also parameter entries define transitively its containing sections. E.g.
  