One of the little-known undocumented new features in FileMaker Pro 16 is when you’re editing a script.
If you’re looking at a "Perform Script” script step, you can now command-click on the name of the script, and it will open up that script for you plus highlight it in the left margin. This is an amazing feature!
But it would be a much better feature if there was some onscreen visual (such as a little arrow icon or something) for people to know that this behavior was available to them. I bet a lot of developers will miss out on this great functionality!