It would be fantastic if I could simply click on the equation and have a mini text box pop up with the relevant LaTeX code. Emacs' AUCTeX preview mode renders

It would be fantastic if I could simply click on the equation and have a mini text box pop up with the relevant LaTeX code. Emacs' AUCTeX preview mode renders your equations and tables within the emacs buffer. It's not a PDF, but if I understand correctly, there are format limitations in PDF that prevent instantaneous local updates within a large document. Preview mode is fast.