enriched-handle-display-prop
enriched-handle-display-prop is a compiled Lisp function in `enriched.el
'.
(enriched-handle-display-prop OLD NEW)
Return a list of annotations for a change in the `display' property.
OLD is the old value of the property, NEW is the new value. Value
is a list `(CLOSE OPEN)', where CLOSE is a list of annotations to
close and OPEN a list of annotations to open. Each of these lists
has the form `(ANNOTATION PARAM ...)'.