I've been tracing buildings using separate areas for different roof levels as recommended [on the wiki][1]. How should I go about tagging them and signifying that they belong to the same structure? **Here's an example:** ![alt text][2] If I were to just paste the same tags onto each shape, it would look like there were multiples of the same building. What do I do? do? Should I be using some kind of relation? [1]: http://wiki.openstreetmap.org/wiki/Key:building [2]: http://gyazo.com/3ea52159fc22c35b7077892ab1eaca77.png

I've been tracing buildings using separate areas for different roof levels as recommended [on the wiki][1]. How should I go about tagging them and signifying that they belong to the same structure? **Here's an example:** ![alt text][2] If I were to just paste the same tags onto each shape, it would look like there were multiples of the same building. What do I do? [1]: http://wiki.openstreetmap.org/wiki/Key:building [2]: http://gyazo.com/3ea52159fc22c35b7077892ab1eaca77.png