[rules-users] Getting started with Drools Fusion

Hello everybody :) I'm completely new to the Drools universe. I've discovered Drools, or more specifically Drools Fusion, by looking for a powerful CEP engine. I've read the DF user guide and came up with some issues about DF features. It would be great, if anyone can give me some explanations and/or refer to different information sources. My questions: 1. Persistence of events: I know that DF can store events explicitly and implicitly. But does it store events in persistent (e.g., I can continue my computation after a reboot)? If it does, how are the events stored? 2. Sliding windows: It's written that a window contains the last X events/the event occurred in the last X time units. Is it somehow possible to specify a window for process only old events - which does not catch up to the latest event? (Lets assume we have the times A, B and C with: A < B < C and C == current time. Is it possible to specify a window that process events occurred between A and B?) So are more complex windows like described in chapter 7 of the book 'Event Processing in Action' (see http://www.manning.com/etzion/) possible? Are there any (step-to-step) tutorials / how-tos about simple DF programs? In case my questions are stupid because they can be answered when knowing Drools, but I've got absolute now experience using Drools. At the moment I kind of have the feeling, Drools is a little bit too complex for just using to implement CEP applications... Thanks for any help! :) Tina