HOW TO: Vega Facets: What Data Populates them and how do they work?

Vega Offers 13 Facets that can be turned on or off for display in the Vega Discover Catalog Refinements column to the left of search results. 

1. Availability 
2. Date 
3. Format 
4. Collections 
5. Age Group 
6. Literary Form 
7. Persons 
8. Concepts -- ODIN has renamed to Subjects 
9. Language 
10. Locations 
11. Publishers 
12. New Materials