It seems that JBPM core uses parent-child relationship among tokens to emulate the effect of "Split" and "Join". Although such a strategy can make node stateless and store all states and variables in tokens, I've a question over how does JBpm suppot the following structure? => A ---> B ---> C | | | V V V D ---> E ---->F => View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4017415#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...