Methods and systems provide a tree view showing unannotated text nodes in a corresponding data formatted document. When the user begins to annotate the document with a desired data format structure, such as a markup language like XML, a tree view pane is displayed to the user to provide the user with an outline of the data structure presently applied to the document or to provide the user with an outline of the data structure applied to the document as the user annotates the document with data structure. In the tree view, an indicator is displayed in the location of any unannotated text nodes relative to their sibling data elements. If the user focuses on a given unannotated text node indicator in the tree view, the corresponding text node in the corresponding document is highlighted to the user to show the user the location of the text node that has not been annotated with data structure.