Looks like RichEditBox supports math editing and display http://blogs.msdn.com/b/murrays/archive/2012/03/03/richedit-8-0-preview.aspx in Windows 8, but when I copy/paste mathematical equations from MS word doc, they are treated as image and editing is not allowed.
Can I author math symbols/equations in RichEditBox? I can render symbols using their Unicode values(obtained via Character Map App in Windows 8.1), but I want advanced control whereby I can write complex equations.