The /a/ to /n/ thing - well of course it depends. It depends on the meaning of those. For example, if I write 1,2,3 can you guess the next number? It could be

The /a/ to /n/ thing - well of course it depends. It depends on the meaning of those. For example, if I write 1,2,3 can you guess the next number? It could be a sequence, so answer=4, or just three numbers that happen to be 1,2,3 and the next number I need to add is 8, and later I will remove the 2 (perhaps they are hard coded user ids). I am guessing your /a/ to /n/ structure is quite flexible. More like the latter of my example. If you are saying WET event if it is a sequence then I'd argue that's OK if it is unlikely to change and it depends on other factors. Is there other metadata that depends on the letter for example that would benefit from the loop.