We both should have known:
https://thegimptutorials.com/how-to-add-alpha-channel/
https://parkerphotographic.com/advan...channel-guide/
https://lizsscribbles.com/photoshop/...a-in-gimp.html
These young whippersnapper kids of today! Able to think abstractly and all that... lol - and then there is Jeff-Groves- he ain't no spring chicken, who "thinks" programming while driving, writes it in his head, and then steps through and debugs it while he's driving... I used to be able to steer and brake while driving, but code? I usually ended-up in a puddle of drool (not always my own) on the keyboard at work while coding... alpha channel - who'd a-thunk it? Good luck reading. I cannot verify the accuracy of either one of those 3 hits there... I am drooling already, but it is not the Pavlov's Dog "supper!" effect, it is the "sleep" effect...