That's correct whitewolf, you'll always be fine, as long as you don't buy and sell at a loss, in which case you'd have to deposit the funds into your account by settlement day of a loss sale, if there aren't enough in your account to cover the loss.
With comsec, I find it rather confusing reading the transaction account because trades are offset at irregular intervals, so keep my own running total to avoid problems.
I'm curious as to how others manage the accounting with comsec.
