allout-decorate-item-span

allout-decorate-item-span is a compiled Lisp function in `allout-widgets.el'.

(allout-decorate-item-span ITEM-WIDGET)

Equip the item with a span, as an entirety.

This span is implemented so it can be used to detect displacement
of the widget in absolute terms, and provides an offset bias for
the various element spans.