List Index - relative to the current list. Index of the value within the currently accumulated list.
Note that when split or toggle-OFF values are carried forward,
it starts with 1, as 0 refers to the value that was carried forward.
Split Index - of resulting emits by the operator, starts with 0, and incremented every time the operator emits data.
Start Index - absolute value index, from the start of the iterable.
Value index details, during split operation.