is a variable defined in `
Its value is
- Automatically becomes buffer-local when set.
Record outline changes for processing by post-command hook.
Entries on the list are lists whose first element is a symbol indicating
the change type and subsequent elements are data specific to that change
'exposure `allout-exposure-from' `allout-exposure-to' `allout-exposure-flag'
The changes are recorded in reverse order, with new values pushed
onto the front.