I'll be more specific with my question. When a .lxf set is downloaded to a Hardrive, like this set here, http://www.eurobricks.com/forum/index.php?showtopic=41226&st=0&p=728282entry728282 The AT-AT, How does one get these parts? This is a specific 'set'. What I want to do is add the parts that construct the AT-AT? I would assume that there's a way to access these parts that make up the model.
If these parts aren't available, how was the model built? I can only assume, the only other answers are that these parts are extra parts that are available in universe mode, and/or that there are designed in a 3d modeling program? All these questions come from the fact that 'Being that im new to LDD' I have no idea what parts are actually available in LDD.
I think i understand now, what I originally thought was that, there was a way to create 'with a 3d modeling program' your own parts. Your saying however that this is not possible, these parts are available in universe mode. Is that correct?