Hi, i'm still learning about bitshares and i am confused about how anyone could send bitAssets to another account. So if i want bitUSD i would need to own btsx that is worth 200% the value of the bitUSD and use it as collateral. So now i have bitUSD backed by my btsx, what if i want to send bitUSD to another person? is this possible? would my collateral remain 200% of my original bitUSD amount. How would this work?