Galactic Unicorn: Using ABCD buttons to call other programs

I know the GU ships with a demo for this, but can anyone point me to other micropython example on the GU were pushing button A runs a.py, button B runs b.py, etc.?

Why is this in Micro Bit section? It should be in Pi Pico.

It was meant for support section.

You will get more help if it in the right section.

Moved to support…Moved to support…