For example you set "If last price goes down 2% (trailing) than.."
Current price is 1000, and rule should execute at 980.
But if price goes up 1100 first, than rule will be executed at 1078.

If you set "If last price goes down 2% than.." (without trailing checkbox) than rule will be executed only at 980, even price goes 110 first.

Also now you can set to sell 86% of your balance etc..

Also now you can set rule "If last price more or less by 10$ than play beep". So you will hear beep every 10$ price change.