I have a lot of PowerPoint text-filled slides (maybe 10-15 in a segment of a presentation) that I want to quickly identify and randomly select. I slide the presenter's view preview area down so the slides all show up in the bottom preview row on the screen without having to do a horizontal scroll. The problem is that the slide is hard to quickly identify because the text is too small and hard to read on the presenter's preview line.

I would like to place a large number or some ID text for the slide on the slide itself in large type, so I can identify the slide easily in the preview area. Of course, I don't want the ID text or number to show on the display screen!

Is it possible to place something on a slide that shows only on the presenter's preview screen?

Is there another way to do this? (If I could tile the preview slides on more than one line that would work, too, but I haven't seen a way to do that either. Any ideas? Thanks