Thanks, I thought so, too, but I can also understand that the comments are not very helpful, if you know nothing about linkers, paging, and object files.
I think I adopted IE/ELSE from BCPL, but thought that IE is nicer than TEST, because it is itself short for If/Else and because it looks almost like IF.
fwiw, I think you commented it very nicely; de gustibus!
Did you come up with if vs. ie ... else ... independently or inherit it from BCPL?