Tip: Highlights, gray outs, and quick cover ups
Highlight boxes by default simply highlight a selected area. However, you can do more with them:
- Create gray-out effects
- Make quick fixes
- Design basic backgrounds
Gray-Out Effect 
Simply select Fill outer area to make your content pop and basically create a gray-out that helps your learners focus on a specific area on your screen. Ensure in the timeline that your caption is in a layer above your highlight box.
Quick Fixes
You can also successfully use highlight boxes to fix any problem areas. For example, I forgot to prep the presentation I captured and it shows the presenter names (see red box in image left). Instead of fixing the original content and recapturing or editing the image, I simply used a highlight box to cover up the area.
Frame width and transparency are set to 0 and using the color picker I get a perfect match of the background color.
To finish it up, I merge the highlight box into the background, which updates the image. If you think you might possibly need the original background, simply set the fade in/out to 0 instead of merging. That way, you always easily revert back by deleting the highlight box.
Basic Design
You can use highlight boxes for quick mock-ups and basic background designs. Simply play around with the colors and transparency settings.
