I am still getting used to how Alibre works in the context of top-down design. One method I am using is to create a "Design Criteria" model as I call it that has some of the main features for a given assy. As such, I create a part with the basic features, that I can then link to other parts so as to maintain common parametric features (think of a common plane to drive an extrude to as one example). That's all fine (though I really wish you could use planes and sketches for this, not just geometry), but when it comes time to create a BOM, that extra part is of course included. Is there a way to exclude this part from the BOM, aside from just using the Hide Row? The Hide Row I suppose would work, but seems like a clumsy approach. In NX you can toggle parts to be considered "Reference Only" to avoid this very issue. It is just a bit of metadata, wondering if Alibre offers this or could offer it?