Site Designer Goals

  * Provide an integrated look and feel for site content.

    - **XXX** "Create new skin for the site":CreateNewSkin

      o portal_skins Properties tab.  Discussion of Layers and their
        order of precedence.  
            
      o Creating a new layer.  Difference between file system layers
        vs TTW layers.  Don't document actually creating a file system
        layer, this should likely be a separate use case that
        refers back to this one.

      o The theory behind customizing methods, but don't refer to
        specific layers or specific methods/images.
 
    - **XXX** "Modify skin appearance":ChangeSkinLookAndFeel

      o Brief description of customizing methods.  Refer back to
        "Create new skin for the site".

      o Document each layer that deals with appearance with a
        description of each constituent object (method, image, ...)
 
  * Give end users an effective way to navigate the site.

    - **XXX** "Change skin behavior":ChangeSkinBehavior

      o Brief description of customizing methods.  Refer back to
        "Create new skin for the site description".

      o Document each layer that deals with behavior with a
        description of each method.
 
  * Keep the site fresh and interesting for end users.

    - **XXX** "Change the default skin for the site":ChangeDefaultSiteSkin

      o Brief description of skins.  Refer back to other skin use
        cases. 

      o portal_skin Properties tab, bottom half.  Very simple form.