DDoop, thank you for taking the time to answer my question. For the last 6 months, I've been working with Godot everyday, fulltime and I've launched 2 games, make 3 prototypes and 2 tools. All this as been done thanks to "pushing all the buttons". But there must be a minimum documentation to start with because, if I don't know what's possible, I don't know what I can/want to do.
Textedit has lots of features. I would like to know how keywords work, how syntax highlight works, how code completion works, how selection, line folding and undo work. How to use breakpoints? What is automated and what must I code for these to work? If I have a keyword with a color, why do other words in my text get highlighted with other colors beside my defined keyword? Knowing the basics of the control allows for educated guessing and defining for what to (and not to) use.
Wanting to know what a thing does and the minimum of how it does it is always a broad question. Does anyone knows how to work with Textedit and provide a basic guidance?