Swap and Backtesting and Sharia??

 

When "Backtesting" are swap values availabe ...... and used in the computation?? I know they appear in Symbol properties..

How would a Sharia account change this also?? Where can we find out more info on swapless sharia accounts??

 
I assume the value for swap in such accounts would always be zero and adding zero swap is technically the same as no swap at all.