[rules-users] Rule package/rule name/ruleflow-group question

Hi, I am new to Drools. I am not sure how rules should be organized using package. My questions are: 1) Should rule name/ruleflow-group name be unique within the same package or globally? 2) Can multiple packages be loaded into workingmemory at the same time? if this true, then I have following quesitons: 2.1 How to load multiple packages? 2.2 How the rules have the same name but belong to different packages, are differieniated and fired? Thanks, Brian Xiang