There are times when they're in brackets, though, or it's implied that the character is meant to be seen or heard. Like, for example: [said in a soft voice] I'm sorry...

I never know what to do in those instances. Unless they're specifying that it's a voice post, I just assume my characters can't hear the inflection... o.O I meant to bring it up a while ago, but I keep forgetting. XD;