You'll probably want to use the Quill Composer, which is our official (in development) WYSIWYG composer.
You should be able to download it from the plugins list.
Don't you use markdown here?
Can i integrate mathquill editor(WYSIWYG editor) onto the existing editor.
Im also interested into this. Right now I am using mathJax. However, to show the equtions, you have to refresh the page.