PB Tutorial (ERROR) and question

[Daniel Perry]

I was just reading the tutorial on the PB API, and came accross a slight error:
In the "Deleting Persistent Objects",
PersistenceBrokerFactory.defaultPersistenceBroker();
Should be:
broker = PersistenceBrokerFactory.defaultPersistenceBroker();

One more thing, using ODMG i have been doing tx.markDirty(object) to update an object 
outside of a transaction. If i do a broker.store(object) outside of a transaction will 
this have the same effect?

Thanks,
Daniel.