Adding comments in Adobe Reader

Often while indexing and working with Adobe Reader, I highlight text to indicate a typo or an assumption I made for the index. Usually I want to add a comment to the highlighted text and I always had to double click on the highlight to add a comment. But there is a setting to make a comment box pop up automatically: Click on Edit/Preferences/Commenting and tick ‘Automatically open comment pop-ups for comments other than notes’. A timesaver for sure.