Start Level 1 Node: Planning EnvironmentPlanning EnvironmentEnd Level 1 Node: Planning Environment
   Start Level 2 Node: Buffer Concept (BW-BPS)Buffer Concept (BW-BPS)End Level 2 Node: Buffer Concept (BW-BPS)
   Start Level 2 Node: Planning AreaPlanning AreaEnd Level 2 Node: Planning Area
      Start Level 3 Node: Editing a Planning AreaEditing a Planning AreaEnd Level 3 Node: Editing a Planning Area
      Start Level 3 Node: Data SlicesData SlicesEnd Level 3 Node: Data Slices
      Start Level 3 Node: Multi-Planning AreaMulti-Planning AreaEnd Level 3 Node: Multi-Planning Area
         Start Level 4 Node: Multi-Planning Area: Application ExamplesMulti-Planning Area: Application ExamplesEnd Level 4 Node: Multi-Planning Area: Application Examples
      Start Level 3 Node: VariablesVariablesEnd Level 3 Node: Variables
         Start Level 4 Node: Defining VariablesDefining VariablesEnd Level 4 Node: Defining Variables
         Start Level 4 Node: Using VariablesUsing VariablesEnd Level 4 Node: Using Variables
      Start Level 3 Node: Characteristic RelationshipsCharacteristic RelationshipsEnd Level 3 Node: Characteristic Relationships
         Start Level 4 Node: Defining Characteristic RelationshipsDefining Characteristic RelationshipsEnd Level 4 Node: Defining Characteristic Relationships
         Start Level 4 Node: Where-Used List for Characteristic RelationshipsWhere-Used List for Characteristic RelationshipsEnd Level 4 Node: Where-Used List for Characteristic Relationships
   Start Level 2 Node: Planning LevelPlanning LevelEnd Level 2 Node: Planning Level
   Start Level 2 Node: Planning PackagePlanning PackageEnd Level 2 Node: Planning Package
   Start Level 2 Node: Set Up of Planning ArchitectureSet Up of Planning ArchitectureEnd Level 2 Node: Set Up of Planning Architecture