What are the in context features in top down asembly in SW?
Top down assembly modelling is often referred to as in context because certain parts are built "in context" of another part or a dimension/relation within the assembly. The in context feature are referencing another part's dimension/relation and will thus update when the other part is updated.
Right click the part in the assembly tree and go to List External Refs to see what is being referenced. You can also use the break all option to break the links between parts.