EditDefaults page for a java portlet

Hello
I'm writing a portlet that shall call an url that returns a xml datastructure and present the data the way i want.
To avoid hard coding the url the portlet shall connect to, i want to create an EditDefaults page where i can specify the url.
I have been looking at the online courses at http://portalstudio.oracle.com/servlet/page?_pageid=832&_dad=ops&_schema=OPSTUDIO (training center).
But i am a bit confused. They are talking about an EditPageRenderer while discussing portlet customization. The way i see it, customization is a way that users can customize how they want the portlet to show, but Edit Defaults is a way that administrators can tell the portlet how to work for all users regardles of the customization. Do i have to use a NameValuePair object to store "Edit Defaults" data?
I would be grateful if someone could show me some source code how to implement an EditDefaultRenderer, and how to enable this in the provider.xml file.
Regards
Per-Jarle Sfther

You need to do go through the exact same steps to make a portlet provide EditDefaults functionality than the steps for Customization.
The two differences are in the provider definition file:
1) Enable rendering the Edit Defaults link for page administrators:
<showEditDefault>boolean</showEditDefault>2) Define a renderer (class, jsp, html,...) that is being used to render the edit defaults screen if different from the customization screen:
<editDefaultsPage>
</editDefaultsPage>If you don't define any renderer, the one specified for customization (editPage) will be used for the edit defaults screen.

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