When I dictate text to my phone, sometimes to avoid having to type it, some of it is underlined with blue dots. It looks real pretty, but the purpose of this is lost on me: if these words are treated differently from other words, or if the underlining means something, I have no idea what it could possibly be.
At first, I thought that it was because during voice dictation, the software had understood a couple of different things and that I could then chose between different options, but that's not what it seems to be. If I click the words that are underlined, it doesn't give me anymore options than when I click non-underlined words.
Maybe it's app-specific? Although it looks like it would be system-wide. The app used in this screen cap is What's App.