And personally I find tabs is the most efficient design for switching between files.
Can you elaborate? With a keystroke, it renders a LaTeX formula inline.
I don't use that mode, though, do I can't tell you how to set it up. I use org-mode, which lets you embed LaTeX formulae. I use this often, but surprisingly am not seeing anything in my Emacs config for this, so it may work out of the box. You do need some packages installed on your machine (dvipng, latex, etc). I already had them installed, so for me it was a simple matter of the keybinding: C-c C-x C-l
Details from the manual:
https://orgmode.org/manual/Previewing-LaTeX-fragments.html
Perhaps a friendlier guide:
https://orgmode.org/worg/org-tutorials/org-latex-preview.htm...
If you're not familiar with org-mode, it is highly recommended. Its learning curve is quite shallow. I'm sure there are tutorials out there, but for me the Google Tech Talk was enough to get me started and convince me I should use it:
https://www.youtube.com/watch?v=oJTwQvgfgMM
Ever since I encountered org mode, I author everything with it: LaTeX, HTML, DOC files, etc.
C-c C-x C-l worked out of box!
Weird, once I have C-cxl'ed a fragment to rendered latex, and the C-cc'ed back to monospace, I am no longer able to insert superscript and subscript symbols, and it complains about cdlatex-superscript or cdlatex-sub-superscript...