Selecting your preferred X-Ref technology

- You set your preferred cross reference system at user-level, that is, in your SNiFF+ Preferences.
- If you decide to use the DB-driven X-Ref technology, be aware of the implications as described under Working Environments and cross referencing
- If you decide to use the RAM-based X-Ref technology, there is not much else you have to take into consideration. The only thing you need to remember is that you can not mix different X-Ref technologies within a Working Environment hierarchy.