[Zope] Programatically set permissions and local access?

Is there a way programatically in DTML to set permissions of a Folder and to assign local users and roles? I looked through the Zope book and online help, but did not see anything that talked about setting local permissions on a Folder. Any help would be great. Thanks, Chris __________________________________________________ Do You Yahoo!? Make international calls for as low as $.04/minute with Yahoo! Messenger http://phonecard.yahoo.com/