Make pop-up notes visible in ADE

Hi. I'm struggling to make any pop-up notes/comments that I add to an Adobe Digital Editions document visible without first having to hover my mouse over the highlighted text (or leave the comment open/semi-transparent). I do a lot of highlighting and only make occassional comments, so I just want something to let me know which highlighted bits have comments attached so I dont have to hover over every highlighted bit to figure this out, but I havent figured out a way to do this. Any suggestions would be appreciated.