error in documentation?

In http://www.postgresql.org/docs/8.2/static/tutorial-transactions.html
"After rolling back to a savepoint, it continues to be defined, so you can roll back to it several times. Conversely, if you are sure you won't need to roll back to a particular savepoint again, it can be released, so the system can free some resources. Keep in mind that either releasing or rolling back to a savepoint will automatically release all savepoints that were defined after it."
mustn't it be :
"After rolling back to a savepoint, it continues to be defined, so you can roll back to it several times. Conversely, if you are sure you won't need to roll back to a particular savepoint again, it can be released, so the system can free some resources. Keep in mind that rolling back to a savepoint will automatically release all savepoints that were defined after it and releasing a savepoint will automatically release all savepoints defined before it."

if not, could you please explain why this decision is made?
thanks,
Michael

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