Today is the first day that my new IB account is funded. So I was exploring through TWS, and as a test after hours, I placed several limit orders for US equities, updating the limit amounts *SEVERAL* times, and cancelling and replacing the limit order at least 10 times..... ....Then i realized that they charge to cancel/modify?!?!?! If this is the case, I probably blew at least $50 in 10 minutes for no reason! I'm looking all over TWS and account management, and I can't find a report that breaks down what i just did! Help!