(defvar allout-widgets-tally nil
"Hash-table of existing allout widgets, for debugging.
-Table is maintained iff `allout-widgets-maintain-tally' is non-nil.
+Table is maintained only if `allout-widgets-maintain-tally' is non-nil.
The table contents will be out of sync if any widgets are created
or deleted while this variable is nil.")
Optional PARENT-WIDGET is the widget for the item's parent item.
-Optional HAS-SUCCESSOR is true iff the item is followed by a sibling.
+Optional HAS-SUCCESSOR is true if the item is followed by a sibling.
We also hide the header-prefix string.