[rules-users] Question about ruleflows

I'm going through some code and I came across something that doesn't make much sense to me. Can someone explain to me the design behind tieing a ruleflow to a package? I'm trying to programmatically build some rulebases together and just realized I can not add a ruleflow to a rulebase directly unless it has already been added to a package (thus when I add the package to the rulebase, the ruleflow is indirectly added). This doesn't seem completely right and would like some clarification on why. Thanks, Eric