---
id: GS
name: Functional Group Header
purpose: To indicate the beginning of a functional group and to provide control information.
elements:
  - { ref: GS01, id: '479', req: M }
  - { ref: GS02, id: '142', req: M }
  - { ref: GS03, id: '124', req: M }
  - { ref: GS04, id: '373', req: M }
  - { ref: GS05, id: '337', req: M }
  - { ref: GS06, id: '28' , req: M }
  - { ref: GS07, id: '455', req: M }
  - { ref: GS08, id: '480', req: M }