"Running a Tutorial" section in the installation guide is confusing
I've been wondering whether there is something missing from the "Running a Tutorial" section on this page of the guide: https://gjs.guide/guides/gtk/gtk-tutorial/03-installing.html.
Place any code you would like to run in the code viewer on the left side of the window.
Now, click the Run button in the upper right corner.
You can see any program output in the output viewer on the right side of the window.
I can't see a code viewer anywhere on that page. There don't seem to be any references to it as you progress further along in the guide, just code snippets that you can copy and run/edit in your own IDE.