Not without extensive use of Javascript, which I avoid like the plague for a plethora of reasons.
I'm with you on really liking WordStar stuff, though. I prefer to use PrimalScript 2.2 instead of 3.0 for development work mainly because 2.2 still supported WS keyboard shortcuts, which all of us old geeks have memorized. It was the standard (aside from WordPerfect) in the pre-Windoze days.
Is there any possibility that the WordStar method could be implemented?
WordStar? Omigod! You've just made me feel very old... It was the first word processing program I used, and it drove me insane. All those damned toggle commands that didn't show on your screen. So you'd finally go to print something, and after three pages it'd suddenly shift into bold italic superscript or the like... And then you'd have to go back and find the toggles you'd missed.