Linked fields

FileMaker auto-enter capabilities make it possible to create “linked” fields that are directly editable and update each other to keep them in sync.

What I personally like about this technique is they way it works: no buttons to press/scripts to run/events to trigger, but everything “just” changes to keep things linked. To me this makes a very smooth working experience, maybe because it visualizes the internal logic of the application.

Check the sample file I used to prepare two samples I describe.