This is a new thing for me - I imported a DWG, and it has a bunch of what look like Symbol Clips. Which is new and different. They are using them is sorta weird ways, and I have not exploded anything, yet, so I'll see how it goes.
[Edit: These can be edited as Symbol Clips, which is a good thing.]
[Edit: These can be edited as Symbol Clips, which is a good thing.]