VWAP is Volume-Weighted Average Price SMA 1-3 is 1,2,or 3 Simple Moving Average Line(s). EMA 1-3 is 1,2,or 3 Exponential Moving Average Line(s). H-L 1-3 is the Highest high and Lowest low of x bars from the current bar.
Function is where you choose SMA 1, SMA 2, SMA 3, or EMA1, EMA 2, EMA 3, or H-L 1, H-L 2, H-L 3 to show up on your chart. Input 1-3 is the number of bars the Function uses to generate its value, Input 1 determines SMA 1 or EMA 1 or H-L 1, Input 2 determines SMA 2 or EMA 2 or H-L 2, and Input 3 determines SMA 3 or EMA 3 or H-L 3.