The options for the slice function.
slice
The starting index of the slice, inclusive.
Negative values are taken as an offset from the end of the array.
The default is 0 if step > 0 else n - 1.
0
step > 0
n - 1
The step value for the slice.
This must not be 0.
The default is 1.
1
The stopping index of the slice, exclusive.
The default is n if step > 0 else -n - 1.
n
-n - 1
The options for the
slicefunction.