How do yall separate "real" part files you plan on building/buying vs misc part files that are not built? 

Non-part part files being FEA models, representational models used to make a drawing, concepts, morgued files that we want to save but will probably not develop, etc.

Problem is that when I search my vault, I may find 10 part files, but maybe only 2 of them are real parts.

Maybe a variable flag ie "real part" that is set to checked by default on the search card??