hilit-chg-map-changes
hilit-chg-map-changes is a compiled Lisp function in `hilit-chg.el
'.
(hilit-chg-map-changes FUNC &optional START-POSITION END-POSITION)
Call function FUNC for each region used by Highlight Changes mode.
If START-POSITION is nil, (point-min) is used.
If END-POSITION is nil, (point-max) is used.
FUNC is called with three params: PROPERTY START STOP.