Ok, got you. It's discussed in more detail in the store-specific chapters, but having something short in the quick start would be nice indeed. Regarding the need for HSEARCH, that happens to be the case for Infinispan, i.e. here we translate JPQL queries into equivalent Lucene full-text queries (if possible), which is why you need @Field and friends. For other stores (specifically, MongoDB and Neo4j) we translate JPQL into their specific query language, meaning that no separate index maintained via Hibernate Search is needed.

Regarding the license, as you say the entire project is under LGPL. If you don't mind, may I ask why it's stopping to contribute (it's perfectly alright if you don't want to disclose the reasons)? We might consider to put docs unter some CreativeCommons license. Emmanuel Bernard, any thoughts on that?