---
id: HL
name: Hierarchical Level
purpose: To identify dependencies among and the content of hierarchically related groups of data segments.
elements:
  - { ref: HL01, id: '628', req: M }
  - { ref: HL02, id: '734', req: O }
  - { ref: HL03, id: '735', req: M }
  - { ref: HL04, id: '736', req: O }