[Zope] Transactions in Zope?

[Bruce Eckel]

I am creating an external method that makes a folder, creates a
dtml method in that folder, and then sends an email message. If any
of these operations fail, I'd like to "roll back" to the state
before the method was called. I think I heard that zope has
transactions of some kind, and I'm making mods to the ZODB in my
external method, so is there a magic piece of code that would roll
everything back?

Thanks!