Thanks for that info. I've seen the two button toilets in Spain and the UK. I don't remember whether or not they were in France and I have yet to go to Germany. It looks like I'm going to have to make a more extensive tour of Europe's toilets.

Interesting about all the variations over there. So, if you don't stop the water, does it run indefinitely? Also, is it obvious which toilet is which when you encounter one or do you have to fiddle with it to figure it out?