Those are used for input parameters optimization. When backtesting an EA, you can set some starting value, end value and step for each of the input parameter. The Steps column will just show how many optimization iterations will be required to test the given range. It's a standard MetaTrader feature. You can read more about it in their help files:Thanks, the Trailing Stop for open sell position works now.
One more question Enivid, on the user variable input, what is the function of the Start, Step, Stop, Steps columns?