I don't want to speak for the person above, but I've used it a bit. It's like Jupyter Notebook with an eye towards producing really nice looking documents. It's pretty easy to use, though they are still working on it and it may not be feature-complete yet.
How different is it from RMarkdown? I thought is was supposed to be quite similar. Because that is really nice to use when preparing analyses for collaborators. I’d like to get back to having more “compiled” style notebooks for things aside from just R.
