I found this list of developer HTML attributes that I think would come in handy. I found this searching for understanding the attribute that you can use to make your browser into a quick notepad. https://coderwall.com/p/lhsrcq/one-line-browser-notepad

https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/contenteditable

Global attributes are attributes common to all HTML elements; they can be used on all elements, though they may have no effect on some elements.