docuUnits:  
  - id: SWC_1
    displayName: "Software Component 1"
  - id: SWC_2
    displayName: "Software Component 2"
  - id: SWC_n
    displayName: "Software Component n"
  - id: Composition_1
    displayName: "Composition 1"
  - id: Composition_2
    displayName: "Composition 2"
tocs:
  - displayName: Alphabetic list of software components
    contents:
    - idRef: SWC_1
    - idRef: SWC_2
    - idRef: SWC_n
  - displayName: Software architecture
    contents:
    - idRef: Composition_1  
      contents:
      - idRef: SWC_1
      - idRef: SWC_2
    - idRef: Composition_2
      contents:
      - idRef: SWC_n