At one time I had np++ setup so when I highlighted say a closing bracket the opening bracket would also highlight on it’s on. I could then start at the bottom of a page and work my way to the top making sure everything flowed. I lost that feature in one of the updates and can’t remember what I did to initiate the feature. If I highlighted a closing bracket and didn’t get a highlighted opening bracket then I knew there was a problem.
Near bottom right corner you will find the “Highlight Matching Tags” checkboxes…