I opened a new account with Interactive Brokers last night. It's been about 3 years since I closed my last one. In the setup it asks if I want to sweep and it also gave me an option (but I forget what that option was at the moment). On the site in parenthesis, it says that if I plan on pattern day trading, they recommend I do sweep. Can someone tell me what they are talking about and is there a normal action here?