excellent tool. For content creation it could be coupled with some markdown tool written in javascript. I have been using this approach for a while, I put the content in a textarea and the browser does the conversion for you. The formatting instructions (to apply css styles) are similar to LaTeX which i am familiar with and is not too visually intrusive.

You can see an example at http://info.iet.unipi.it/~luigi/netmap/slides.html