Hi all,

I want to create a simple graphical user interface to allow non-technical users to create an XML file without having to manually edit the XML source. Ideally I'd like a drag and drop interface, but failing that, anything really. The contents of the XML file are similar to an encoded flow chart of a binary tree, so maybe something like Visio, with a save as xml option? Here's a quick sample of the XML output that is required:

<?xml version="1.0" encoding="utf-8"?>
<steps>
  <step id="1" type="prompt">
    <prompt>
      Welcome.
    </prompt>
    <next>1.1</next>
  </step>
  <step id="1.1" type="question">
    <prompt>
      Do you have what you need?
    </prompt>
    <yes>1.2</yes>
    <no>1.1.1</no>
  </step>
...
</steps>

Are there any existing tools out there that you can recommend for this purpose? Ideally open-source or with a free personal license, but I'm interested in hearing about all options.

Thanks,

David