If the TinyMCE plugin is a bit heavy for your preferences, Christian Mohn (aka h0bbel) has just checked a NicEdit plugin into the Habari extras repository (download a packaged version from http://habariproject.org/dist/plugins). I did a bit of the coding, so if you have any feature requests, let one or both of us know. Specifically, there are currently no configuration options. If you don't configure you just get the most basic functionality. If you configure and hit save, you get the full panel. Hey, let's call it a work in progress.