As per the JBoss Project Documentation it is clear that if we set SEQUENTIAL = true then It will going to execute rules in Top to Down order but what if we make this flag false and even not set this field at all?

if SEQUENTIAL = false. Will it confirm Bottom to Top order of execution?

I have observed that if not set this SEQUENTIAL flag, by default rules get executed Bottom to Top order. Does this assumption is correct? Does JBoss always execute rules from Bottom to Top order if we not set this flag ( SEQUENTIAL ) ?