[amibroker] on peak/zig functions

["dbirru" <dbjunk@xxxxxxxxxxxxx>]

I am tryig to understand how some functions, like,  the  peak(..), 
zig() functions work in AB for backtesting.

I understand that these functions can refer to future values if used 
in backtesting. My understanding is that  
peak(C,20,1) can refer to future values. But
peak(C,20,2) will not. All of those that refer to prior values (the 
last arguement)greater than 1 will not refer to future values since 
they don't depend on futue values.

Is this understanding correct? If not, can someone give me an 
example where peak(C,20,2) also refers to future values?











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