What is the best practice for using components in an assemblyas a reference to be shownon a drawing and inthe assembly modelbut are not intended to be included in the wt.part structure? Part structures that are driven from the assembly model include the full model tree structure, and I don't see a way to remove items except when an associated part doesn't exist. These models need an associated part because of their use insome BOMs, but might be included in another assembly for reference and not intended to be included in the BOM. We use a method that I don't particularily like, so I am looking for alternatives.