I feel like it would be beneficial to new printers if there was a centralized place to allow us to share information about gcode. I had to learn the hard way several years back and would have loved to have had a goto spot where I could get help. Therefore I propose a forum dedicated to posting known good, and experimental starting / pause / tool change / filament change / sensor / etc gcodes. Different folks will have different ways to the same effect so we can all learn something.
I have a custom start, filament change, print cancel, and end code that I’d share with the community