See https://knowledge.safe.com/questions/68957/get-the-last-index-of-an-array.html
I now know how to access the last element in a list in a single statement thanks to @david_r's answer to this question. So I no longer have to count the list elements then subtract 1 from it before getting the value of the last element in the list. However, in the process of finding out how to do this, I discovered that the ListIndexer allows you to specify a negative number to start from the end of the list.
I haven't yet had a scenario where I needed to get (for example) the 3rd element from the end of the list but these situations are bound to arise at some point! So I'd like to suggest that negative numbers be allowed e.g. _list{-3} to start from the end of the list rather than the start.
