org: Previewing LaTeX fragments

 
 11.7.4 Previewing LaTeX fragments
 ---------------------------------
 
 If you have ‘dvipng’ or ‘imagemagick’ installed(1), LaTeX fragments can
 be processed to produce preview images of the typeset expressions:
 
 ‘C-c C-x C-l’
      Produce a preview image of the LaTeX fragment at point and overlay
      it over the source code.  If there is no fragment at point, process
      all fragments in the current entry (between two headlines).  When
      called with a prefix argument, process the entire subtree.  When
      called with two prefix arguments, or when the cursor is before the
      first headline, process the entire buffer.
 ‘C-c C-c’
      Remove the overlay preview images.
 
    You can customize the variable ‘org-format-latex-options’ to
 influence some aspects of the preview.  In particular, the ‘:scale’ (and
 for HTML export, ‘:html-scale’) property can be used to adjust the size
 of the preview images.
 
    You can turn on the previewing of all LaTeX fragments in a file with
 
      #+STARTUP: latexpreview
 
    To disable it, simply use
 
      #+STARTUP: nolatexpreview
 
    ---------- Footnotes ----------
 
    (1) Choose the converter by setting the variable
 ‘org-latex-create-formula-image-program’ accordingly.