No problem! Yeah, there was also a brief period when sup worked but sub didn't. 😄 I thought I was doing something wrong when sub wouldn't work. lol
Hmm. An asterisk is pretty clear, but yeah, it can come across as a formatting character in markdown editors. I guess you could always use one of these, too: ⋆, ✷, ⭑. They are actually star shapes, so the editor won't convert them.