WYSIHTML5 widget for ToscaWidgets2.
WYSIHTML5 is a lightweight HTML5 rich text editing plugin developed by xing. You can find it's source here: https://github.com/xing/wysihtml5
Example: http://xing.github.com/wysihtml5/
Use it like any other ToscaWidgets2 widget library.
While not strictly required, it is advised that you use this widget together with the tw2.bootstrap.forms module to provide a nice looking interface.