
[;1m  setelement(Index, Tuple1, Value)[0m

  Returns a tuple that is a copy of argument [;;4mTuple1[0m with the
  element specified by integer argument [;;4mIndex[0m (the first element
  is the element with index 1) replaced by argument [;;4mValue[0m.

  For example:

    > setelement(2, {10, green, bottles}, red).
    {10,red,bottles}
