The user should be able to resize the editor pane.
There should be a button that minimizes/hides the preview pane.
This is really useful when the volume of content is really high, or when the user doesn't need the live preview (i.e. "distraction-free content writing" a la Medium).
This is really useful when the volume of content is really high, or when the user doesn't need the live preview (i.e. "distraction-free content writing" a la Medium).