XML Doctor is a smart XML editor for Windows that works
with your DTD or schema files to help you edit or repair your document, using an intiutive tree view. Pick child elements
and attributes from a list. Errors are flagged in red.
Can't edit values, just keys and attributes.
Under Windows XP SP3 this "editor" simply shows a tree of elements without showing their content nor providing any means of editing that content. What's the porpoise?