Variable: org-num--skip-level
org-num--skip-level is a buffer-local variable defined in
org-num.el.gz.
Documentation
Level below which headlines from current tree are not numbered.
When nil, all headlines are numbered. It is used to handle inheritance of no-numbering attributes.
Source Code
;; Defined in /usr/src/emacs/lisp/org/org-num.el.gz
(defvar-local org-num--skip-level nil
"Level below which headlines from current tree are not numbered.
When nil, all headlines are numbered. It is used to handle
inheritance of no-numbering attributes.")