Start Level 1 Node: BRF ObjectsBRF ObjectsEnd Level 1 Node: BRF Objects
   Start Level 2 Node: Application ClassApplication ClassEnd Level 2 Node: Application Class
   Start Level 2 Node: EventEventEnd Level 2 Node: Event
   Start Level 2 Node: ContextContextEnd Level 2 Node: Context
      Start Level 3 Node: Context TypeContext TypeEnd Level 3 Node: Context Type
      Start Level 3 Node: Display of Documentation on an Object TypeDisplay of Documentation on an Object TypeEnd Level 3 Node: Display of Documentation on an Object Type
   Start Level 2 Node: ExpressionExpressionEnd Level 2 Node: Expression
      Start Level 3 Node: Expression TypeExpression TypeEnd Level 3 Node: Expression Type
      Start Level 3 Node: Display of Documentation on an Object TypeDisplay of Documentation on an Object TypeEnd Level 3 Node: Display of Documentation on an Object Type
   Start Level 2 Node: ActionActionEnd Level 2 Node: Action
      Start Level 3 Node: Action TypeAction TypeEnd Level 3 Node: Action Type
      Start Level 3 Node: Display of Documentation on an Object TypeDisplay of Documentation on an Object TypeEnd Level 3 Node: Display of Documentation on an Object Type
   Start Level 2 Node: RuleRuleEnd Level 2 Node: Rule
      Start Level 3 Node: Key Fields of a RuleKey Fields of a RuleEnd Level 3 Node: Key Fields of a Rule
      Start Level 3 Node: Gate ExpressionGate ExpressionEnd Level 3 Node: Gate Expression
      Start Level 3 Node: Validity Period of RulesValidity Period of RulesEnd Level 3 Node: Validity Period of Rules
   Start Level 2 Node: Rule SetRule SetEnd Level 2 Node: Rule Set