Ok, let's make this more concrete so I can start working on it then.
Alternative A:
Provide three functions:
org-toggle-latex-fragment:
bound to C-c C-x C-l
has an optional argument arg
delegates to org-preview-latex-section if necessary (outside of
fragment or C-u)
org-preview-latex-section:
unbound
has an optional argument remove
org-preview-latex-all:
unbound
has an optional argument remove
----
Alternative B:
Do some cosmetic changes to org-toggle-latex-fragment and provide the
following bindings:
C-c C-x C-l: toggle fragment or preview section
C-u C-c C-x C-l: unpreview section
C-u C-u C-c C-x C-l: preview document
C-u C-u C-u C-c C-x C-l: unpreview document
I favor alternative B since it's a simpler change and the only awful
binding is the (by far) less useful one.
