Existing Wording
A value set can be "expanded", where the definition of the value set is used to create a simple collection of codes suitable for use for data entry or validation. This is most useful when a value set includes all the children of a code or a set of codes by filter.

Comments
Decent definition. Consider tighter alignment with VSD project.

Grahame's Comments
sure. Alignment with VSD is expected - but VSD will be ignored if it insists on using arcane language