A user observed this the other day during a class and I recently read a comment by another user that saw it too which reminded me that I had this in my drafts!
You've got to look close... The spot elevation tool has some instance parameters for suffix and there are different ones for the upper or bottom portion of an element. In this case the word Upper...as an extra "p" as in Uppper. I assume it is there for emphasis!?! Yep it's pretty subtle, a perfect item for this department!