Build a console

[Keavon]

This would help influence the overall design in a way that is future proof for the extensions system, scripting, and a headless or CLI version of the Graphite editor. Like in Blender, if you click a button to do something, it will be shown in the console (helpful for API discoverability) and you can also type your own commands.

[gmolinart]

This would certainly help to integrate this into a vfx workflow