I know it supports headings, bold, and italics. I haven't personally tried unordered lists, but it does support nested lists, as well. The trick is to make sure that you don't delete al the necessary spaces. I create my text in a Markdown editor so I can see what it will like and wherever I would have a carriage return I put the \n, and if I'm double spacing I use \n\n. Then when I get it ready for the json file, I delete the each \n and stop, being sure to leave all the necessary white space for any bullets that may be nested, etc.