The HTML Editor is based on the popular
CKEditor which is also Open Source. It allows for basic text formatting.
var editor = new Fit.Controls.Input("Input1");
editor.DesignMode(true);
editor.Width(400);
editor.Height(150);
editor.OnChange(function(sender)
{
var pv = document.querySelector("#Preview");
pv.innerHTML = editor.Value();
});
editor.Value("Hello world");
editor.Render(document.querySelector("#Control"));