An 'undefined' page is any page that has been linked to from within Confluence, but that does not yet exist.

Undefined Page Linked From
Working with Android Data Components Page: Displaying Simple List (Intersoft Crosslight)
Working with Windows Phone Data Components Page: Displaying Simple List (Intersoft Crosslight)
Working with Windows Store Data Components Page: Displaying Simple List (Intersoft Crosslight)
Working with iOS Data Components Page: Displaying Simple List (Intersoft Crosslight)