@TLDCAdmin @stevesmi Although I've seen other systems, I don't doubt that the three-accent mark system is standard. I just don't like it because it's hard to remember - you actually have to learn it to know what's going on. So I'm glad that the underline was added, even though it's (I imagine) non-standard. Because I prefer the underline I'm able to ignore the rising accent mark with no damage. I wish that the little hat and the falling accent mark were combined and the rising accent mark gone, but I understand that's not going to happen. The system in learningtagalog.com is basically what I described, but I wish they hadn't used the apostrophe for the glottal stop because it's used elsewhere in the language. No system is perfect, hehe.
Anyway, my purpose for this thread wasn't to complain about the annotation system; it's fine with me. I don't want to come off as argumentative. I just had that question about glottal stops which the admin answered quite nicely. Thank you very much.