allout-redecorate-visible-subtree is a compiled Lisp function in `
(allout-redecorate-visible-subtree &optional PARENT-WIDGET DEPTH CHART)
Redecorate all visible items in subtree at point.
Optional PARENT-WIDGET is for optimization, when the parent
widget is already available.
Optional DEPTH restricts the excursion depth of covered.
Optional CHART is for internal recursion, to carry a chart of the
Point is left at the last sibling in the visible subtree.