> From my prepress experience - there is quite easy way to add contour to > bezier if you copy the curve exactly UNDER actual curve and change the width > (increase it), color, ... of the underlaying one.
I'm afraid, this would not help in this case. The reson is very simple: When you're attaching two scraps from different levels - they need to be connected exactly. But if you would write this white line - there will be also a thin space between walls, you have specified that have to join exactly :( But some modification of this approach can be the solution. S.
