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Making your first 'wall type' assembly is the first significant step where you say, 'This is pretty cool' and not hard to learn either. Then the escalator starts to move......and the creative thinking kicks in.

The best news is once you learn how to make a wall type, (and you will) floors and roofs follow the same basic rules !

Here's the link.
http://revitrocks.blogspot.com/2006/...wall-type.html