Yes, I sort of understand it. I'm used to just putting 1% on every trade and continuing to do so. As I win I risk more $ per trade and as I lose I risk less. I've never particularly considered the consequences on the equity curve.

So is it better to just risk a certain $ amount per trade and after a year if you have made money increase that $ risk amount a little?

Also how do I code a script to trade micro lots? Do I just change the margin and risk level and it will do it automatically at FXCM's end?