something akin to a closure (except it's not anonymous)
In perl, a closure doesn't have to be an anonymous sub; any sub that uses lexical variables which are declared in a scope outside that sub, closes over those vars at the time the sub is created. Anonymous subs are usually more interesting, since multiple instances of the sub are often created at runtime, thus capturing multiple instances of outer lexicals. Conversely, named subs are created just once, at compile time, thus just capturing the first instance of each lexical.
Dave.
