Ok, so you know how sometimes you play games or use cool programs on your computer or phone? Well, those things need something called graphics to look good and be fun to use.
Minigl is like a helper that makes it easier for computer programs and games to use graphics and make them look really nice. It's like having a little friend who helps the program get the graphics it needs.
When a program wants to show pictures or animations, it asks minigl to help by giving it instructions on how to make the pictures look good. Minigl then talks to the computer and tells it how to show the pictures on the screen.
So, basically, minigl is a way for programs to make things look nice and fun to use, and it does this by talking to the computer and telling it how to show pictures and animations.