I would say in for x in lines: tdiv: text x Whenever the DOM gets rerendered, it iterates over the the lines (or the "model" in general

I would say in for x in lines: tdiv: text x Whenever the DOM gets rerendered, it iterates over the the lines (or the "model" in general), and creates DOM elements from it. At least it looks very similar to React and Angular code, and they do exactly this.