What does ma_shift really mean in mt4?

[Forex Trader]

The explaination I got from the directory is " Indicator line offset relate to chart by timeframe" Can some one expand on that ?

Below I have a moving average where I have set the MA_shift to 0 and I am not sure what it gives me with regard to the calculation of the moving average. Further on in the script you can see (Mode_ema, price_close,1 ) where 1 is a shift one period back.



LMA=iMA(NULL,0,LMP,0,MODE_EMA,PRICE_CLOSE,1);