I re-opened a project and noticed a blue-gray bar in the Time Ruler that I don't remember seeing before. I don't know what it does or how it got there. I'm not talking about the Work Area bar--it's above that. It has handles to extend it on each end and a grab area in the center for repositioning. I'm attaching a screenshot of it. Thanks for identifying it for me.
This question comes up once in a while.
Truth is, it's what's known as an artifact, leftover from a feature that once appeared in Premiere Pro and never really existed in Premiere Elements.
It does nothing and serves no function, and you can pretty much ignore it. (I forget how to turn it off -- or how you accidentally turned it on. If you're really curious, you can post your question to the Muvipix forum. I'm sure someone there will remember.)
Steve, Thanks for your reassuring response--I would have driven myself crazy trying to figure it out.