The Snippet used in the Webel Parsing Analysis recipe for SysML® is far more flexible and powerful than just trying to use the text of a SysML Requirement and the SysML Trace relationship:
- A Snippet is part of a powerful meta-analysis layer that typically comes before formal treatments of the Requirements (and helps elicit them).
- Not every text extract from a domain source document is a Requirement.
- Con: A Requirement element can't appear as narrative commentary in every kind of diagram!
- Con: The text of Requirement element is not always the same as its name.
In fact, the Snippet can be - and often is - used in combination with Trace.