The Comment-based ElementGroup as introduced by SysML1.x is deceptively powerful.
The SysML ElementGroup is adapted by the Webel Parsing Analysis recipe for SysML® as the «snippet» for traceable model element elicitation.
This trail section is a pre-requisite for all Webel Parsing Analysis tutorial trails. You should also have completed this mini trail section first: 17:01: Creating custom Comment stereotypes
This topic is now also covered in more detail in a separate dedicated tutorial trail:
NEWS: New detailed Webel Parsing Analysis recipe tutorial: TRAIL: Theory and best practices for the Webel Parsing Analysis recipe for SysML v1.x