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I recently tried LyX and although I didn't like the way it works (you have to press buttons for everything), I liked so much the preview. The best thing was that when you write a \frac it expands it and lets you see the nominator and denominator or when you write \sum etc.

I was wondering if there is a way to have that functionality in any online editor or generally in other editors.

closed as too broad by Torbjørn T., Jesse, Stefan Pinnow, percusse, TeXnician Jun 5 '17 at 9:00

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • The functionality of any editor depends on the developer(s), so there is no general solution I think. There are editors that do this though, I think Kile and Emacs both have it. Overleaf as well, if you turn on the Rich text feature. – Torbjørn T. Nov 9 '16 at 17:11
  • Related question: tex.stackexchange.com/questions/34522/… Edit: Oops, one thing: were you talking about the actual preview feature of LyX, or just the standard view of math mode? I was talking about the former, where the code is generated into a small image which is displayed instead of the standard view. – Torbjørn T. Nov 9 '16 at 17:13
  • @TorbjørnT. I am talking about the standard view where you write not the output. :) – Adam Nov 9 '16 at 17:24
  • Sorry, I was in any case not talking about the output, but (in LyX) Tools --> Preferences --> Display --> Instant preview. But still, my first comment applies, I don't think there is any general solution to this. – Torbjørn T. Nov 9 '16 at 17:29

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