[Zope] Setting Default Properties in a Product

I have a product I have created. When creating an instance of the product, there are several property field which I pre-populate with default values. Those default values are currently set in my __init__() function. I would like to allow the users to redefine the defaults at the product level. How do I add a default properties page to my product so the user can set them in /root/Control_Panel/Products/{MyProduct} so that each new instance of that products uses their defaults and not my hard-coded defaults? Robert J. Roberts robert_j_roberts@rl.gov