[isatrader]

When you do a calculation like this, is the fact that you have the previous days close (Close[1]) with Average[10] saying that you want the 10 day average closing price up until yesterday's close? So the 10 day average shifts down a day? (so if we had Average[10](Close[2]) Average[10] would shift down another day?)

The number in the Close field shifts it back by the number of days you specify. So Close[5] means five days ago, whereas Close[1] means yesterday

With the following line of code...
c4 = Close > 5

What is 5 here, the day of the weekday? (so Friday)

This simply means the closing price of the stock is greater than 5. This filters out the penny stocks, which I have a separate scan for that just reverses the greater than symbol to a less than symbol i.e.

c4 = Close < 5

which then gives you only results with a price below 5.

What is the difference between 'Average' and 'AverageTrueRange'?
Condition1 = (Close[0]-Close[1]) / AverageTrueRange[200](close)

Average = the price's Moving Average (MA)
Average True Range = Average True Range Indicator, and the number is the time period select and (close) is an option from the indicator, as you can use other options like high, low, open, median etc.

Condition1 = (Close[0]-Close[1]) / AverageTrueRange[200](close) is to determine which stocks get shown, as by default it will just give you the highest percentage gainers, which is no good. As as we know, we want to find the stocks that have made the biggest percentage moves relative to normal trading range. So we use the Average True Range instead to rank them, as also the scanner can only show 50 stocks, so the ATR will stop you getting all penny stocks.

c3 = Average[10](Close[0]) > Average[10](Close[1])

This is the moving average. So I'm asking the screener to find a stock that's 10 day moving average is higher than yesterday's 10 day moving average. i.e the 10 day MA is rising.

I hope that helps and I've attached step by step explanations to each code section below