What pain point are you perceiving?.
I'm reviewing Marked documentation, attempting to create a custom setup where, it transforms new lines starting with 'notice: ' into a specifically formatted DIV. By my understanding I need to first add a custom named tokenizer and then a renderer based on it? Or am I going about this the wrong way?

Describe the solution you'd like
I'd like to ea

It looks like it'll require adding another writer to the format_document process (to have entries written each time you encounter an anchor, separate to writing the body of the document).