Yes. Again, three factors, I think, in the answer, Jeff to kind of unbundle it. So 2020, you're right, an early spring reaction to all the knives that were falling helping with cost reduction and provoking cost reduction for good reasons. Second was interesting, the need to deal with double-digit demand thereafter for the next eight months. So certainly, some costs needed to conduct clear equation as 2020 played out. And then third, technology. What did we do, can we do, can we continue to do relative to technology, which is kind of the whole, outcomes of technology is to improve cost. Especially we should see gain of all the technology that's intended in that. So that's nice in abstract answer. If I look at 2021, I would say this, half of our SG&A are people. And commission growth, growth in incentive pay, we want that to happen. We would expect that to happen next year. And so with the SG&A increases, for example, in that category. Rent, which is about 15% of SG&A is, I think, flat this year. That's an accomplishment. Our teams went to landlords and dealt with the realities of what was going on in the market and this year's rent is flat. Well, that was otherwise intended to are likely to increase. I think some of those savings will be kept and sustained into next year. So if I try to summarize it without another 10 minutes of explanation, we would see some SG&A growth next year, just in the realities of what happened in 2020. We are making investments in our distribution network in 2021 with people and locations. And we see the opportunity. We have really OEM partnership in many of those efforts, and we're going to go out and expand our network some next year, and there'll be some SG&A growth for that. Otherwise, technology will help pinch those increases. And again, I would expect not the same performance but a moderate increase next year.