 Well worth having a landscape architect or designer kind of spec that out for you because if you're going to do it yourself, you'll know exactly what you have to do. And if you're not going to do it yourself, you can use that spec to get bids from qualified contractors and you'll know that they're all going to be sort of bidding apples to apples. The problem is if you just call a contractor and say, build me a retaining wall, everyone's going to build it slightly differently and it's going to be hard for you to figure out