Please write a chapter about working with DrawingArea and Cairo in the Rust-GTK4!!!

[maratreason]

Please write a chapter in the Rust-gtk4 book about working with DrawingArea and Cairo. This is the coolest tool in gtk. There are dozens of application ideas that use this tool, but there is absolutely no information on how to use it properly. Often, you have to piece together information from AI. It's difficult to see the full picture. Overall, thank you for the Rust GTK book. It's a really good book.