Variable: preview-dump-threshold
preview-dump-threshold is a customizable variable defined in
preview.el.
Value
"^ *\\\\begin *{document}[ %]*$"
Documentation
Regexp denoting end of preamble.
This is the location up to which preamble changes are considered to require redumping of a format.
Source Code
;; Defined in ~/.emacs.d/elpa/auctex-14.1.2/preview.el
(defcustom preview-dump-threshold
"^ *\\\\begin *{document}[ %]*$"
"Regexp denoting end of preamble.
This is the location up to which preamble changes are considered
to require redumping of a format."
:group 'preview-latex
:type 'string)