I have to correct myself: Actually I removed the Quote widget (that's why the cart doesn't get empty after check-out), because honestly I don't get the point for what it's needed... I have configured Free Shipping as the only shipping option. Now, when I check-out, I get the form "Enter Shipping Address". After this is done and I click next, I get the Quote form which again asks for an address! That makes no sense and I wish to only have the shipping address form and once this is submited, the order should be stored.
I have achieved displaying a message like "order received" by entering these messages into these empty fields at the top of the shipping configuration window. There seems to be an undocumented (?) feature titled "Require Shipping TOC on checkout. Use label (HTML ok):". What means TOC? How to use this if >not< without quote or any other payment widget?
Thanks in advance,