You can clone with
Review of module may be quite long and include example code or references to external site. Markdown is already used in modules posts. It would be good to have its power in comments too.
Here is an example of such comments that would have benefited from Markdown formatting:http://prepan.org/module/3Yz7PYrBEp#comments
I second this request.
Neil Bowers provides a review of several choices: http://neilb.org/reviews/markdown.html