Tom Deprez wrote:

Is there a way to see which keywords, etc are indexed in a catalog?

Yes.

eg. Let's say I indexed the title of a class and now I want to see all the titles in the catalog (so I can see if I'm programming correctly)

If it's a Field Index, you can use uniqueValuesFor('indexname'). Text indexes do not support this notion because their unique values map to integers. What maps those integers back to words are Vocabulary objects, which can be queried for all of their words. -Michel