occur-edit-mode
occur-edit-mode is an interactive compiled Lisp function in `replace.el
'.
(occur-edit-mode)
Parent mode: `occur-mode'.
Major mode for editing *Occur* buffers.
In this mode, changes to the *Occur* buffer are also applied to
the originating buffer.
To return to ordinary Occur mode, use M-x occur-cease-edit.
In addition to any hooks its parent mode `occur-mode' might have run,
this mode runs the hook `occur-edit-mode-hook', as the final step
during initialization.