[Zope] Localizer problems with 'myMessageCat'

Hi, I'm trying out the product Localizer Version 0.8.1. I am following the Tutorial from CodeSyntax available at: www.zope.org/Members/CodeSyntax/DTML_Localizer I only have some parts that I don't understand: At Tip # 1: Then, go to the Localizer folder, choose properties, and add selected_language to accept_methods What is Localizer Folder here, because I can't find the property accept_methods and so can't add selected_language. At Tip # 4: In the form the following call is made: <dtml-var "myMessageCat(title, id)"> But I can't find the method myMessageCat in the code. I get the following error: NameError: global name 'myMessageCat' is not defined Can somebody help me with this problems? Greetz Nico