If you live in a non-english speaking country, you'll learn that Microsoft does us the favor of "translating" the shorcuts. So, in portuguese, CTRL + S means "save" in about every program you'll encounter, but for Microsoft products, it means "sublinhar" (underline).

CTRL + A is not "select all" but "abrir" (open).

Well, that's just messed up... thanks a lot Microsoft...