Visio Flowchart to XML - how?

[Reactor]

Hello All,

I built a flowchart in Visio and would like to save it as an XML file, so I can get the data into Excel and play around. The goal is to have each step in the flowchart to become an item in an Excel checklist.

Even though a lot of Googling says otherwise, this is not a simple "save as" operation, as XML does not appear on the list of file types.

How do I do it?

TIA,

BG