Binary :: index - Get byte value at position
The function returns the byte value at requested position iPosition. The byte value is returned as integer (int32) with a value between 0 and 255.
When the position passes the end of the binary data block, the function returns -1. When the position is invalid (negative), the function throws an exception (589).
Return value: Integer value ( int32 )
The value is passed as platform independent 32-bit integer value.