org-mode in emacs, but I think the question is also relevant for
org-mode you can show latex fragments, as the manual demonstrates.
But: these fragments (mostly math formulae) seem to have constant size. When I type
C-x C-+ or
C-x C-- only the buffer text size changes. How can I change the fragments size from the buffer?
(I know I can make the fragments larger or smaller with
org-format-latex-options, but this is permanent. I want to change the size of the fragments (the png files) like the text.)