Understand the importance of picking the correct sketch plane for starting a part. Choose the starting feature and starting sketch plane for a part. Understand how the choice of a starting sketch plane can affect the drawing.
Replace one component with another in an assembly. Replace selected instances of a component in an assembly with a new part. Optionally, re-attach mates to simplify the insertion of the replacement component.
Create references between parts in the assembly using external references. Understand the difference between in-context and out-of-context external references. Lock, unlock, and break external references to stop the propagation of design changes.