IFTE odd behaviour

[rprosperi]

(10-12-2019 06:41 PM)Carsen Wrote:  2. They are different because you typed IFTE in capital letters. Type them in lower case & you will get your result.

Thanks Carsen! I did know that, once, long ago...

So, can anyone explain the real question, which is why Home commands must be in Upper case, while CAS commands must be in Lower case, except for those situations in which it isn't required?