Really nice idea. I found that you can see your own regex with railroad diagram by going to one of the prepopulated examples and editing it. However, it wasn't

Really nice idea. I found that you can see your own regex with railroad diagram by going to one of the prepopulated examples and editing it. However, it wasn't clear to me that's the intended use of the tool. It's either a little side-effect, or not super-discoverable.