You are looking at documentation for an older release. Not what you want? See the current release documentation.
Create a very simple gadget in eXo Platform.
Create resources and apply them into a gadget.
Use AJAX and HTML DOM Object for a gadget.
Customize a gadget, including: changing a gadget's category, resizing, changing thumbnail and setting preferences for a gadget.
To get more information on how to develop gadgets, see Managing Google Gadget, eXo Add-ons guide.