[Zope] change permissions

I 'd like to know how to change permissions in DTML : I have a method what create a file with a selected uploaded PDF file, and I want to give to Anonymous the View permission for the created file. thanx. sbaline () / \ | <> | (____) zazen rules ... _______________________________________________________ Send a cool gift with your E-Card http://www.bluemountain.com/giftcenter/