Hi again Walter :-)
The central point of Extreme Programming appears to be to simplify the process chain of software development by grouping the process into four semi-abstract categories. I don't think that you can interpret each category literally.
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John Koziol, ex-MVP, ex-MS, ex-FoxTeam. Just call me "X"
"When the going gets weird, the weird turn pro" - Hunter Thompson (Gonzo) RIP 2/19/05