CreatiCode Scratch Plugin - Enable ChatGPT for Block-Based Coding

Is there a standard textual syntax for Scratch programs? sb3 files are binary.

And isn’t it the case that ChatGPT has seen millions of Python and JavaScript programs but nowhere near as many Scratch programs? Or if all ChatGPT knows about the Scratch syntax is from the prompt is that enough to come close to the quality of Python or JavaScript programs that ChatGPT can generate?