There's a new tutorial out on my website on frames in Ren'Py! Find it here: https://feniksdev.com/renpy-screen-language-basics-frames/

Learn about frame, the properties unique to it, how it's different from window, and more. I even cover the mysterious has statement and what it does.

I wanted some extra time to work on my next tool, so you get two tutorial weeks in a row, but this coming weekend should be a tool release again! Thanks for your understanding :)