Spot the Difference

I was initially confused at the Web Services UI I thought it was XUP all over again. It appears to be just a templating and macro type idea (like Velocity).

Are they trying to look like some other organisation?
http://www.wsui.org/doc/20020619/doc/20020619/WD-wsui-20020619.html

Anakia (based on Velocity)
http://jakarta.apache.org/velocity/anakia.html

Like this one? (Not the same idea, though):
http://www.w3.org/TR/2002/NOTE-xup-20020528/